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wdc-climate.de:2938811 eng; USA collection ETH_cmip5_esms Dr. Martina Stockhause Deutsches Klimarechenzentrum http://www.dkrz.de/ pointOfContact Prof. Reto Knutti ETH Zürich http://www.iac.ethz.ch/ pointOfContact 2019-07-02T11:14:20 ISO 19115 ISO 19115-2:2009 IPCC Working Group I AR5 snapshot: The esm experiment group 2014-03-13 publication 1 ETH_cmip5_esms doi:10.1594/WDCC/ETH_cmip5_esms Prof. Reto Knutti ETH Zürich http://www.iac.ethz.ch/ Email: reto.knutti@env.ethz.ch author WDC Climate at DKRZ publisher "esmX" are an experiment family of the CMIP5 - Coupled Model Intercomparison Project Phase 5 ( https://pcmdi.llnl.gov/mips/cmip5 ) including esmHistorical, esmrcp85, esmFdbk1, esmFixClim1 and esmFixClim2. CMIP5 is meant to provide a framework for coordinated climate change experiments for the next five years and thus includes simulations for assessment in the IPCC AR5. This subset of the CMIP5 esm data were collected by ETH Zurich until 15th March 2013 in support of IPCC AR5 Working Group 1 ( http://wiki.c2sm.ethz.ch/COSMO/CMIP5 ). These data are part of the IPCC-DDC AR5. esmX: Variation of CMIP5 experiment with alternate forcing (emissions-forced historical and rcp85) or alternate feedback (CO2 increase feedback on radiation code for esmFdbk1, esmFixClim1/2). Experiment design: https://pcmdi.llnl.gov/mips/cmip5/experiment_design.html List of output variables: https://pcmdi.llnl.gov/mips/cmip5/datadescription.html Output: time series per variable in model grid spatial resolution in netCDF format Earth System model and the simulation information: CIM repository Data are structured and entry names are set according to the ETH Zurich Archive layout: "experiment/MIP table/variable/model/ensemble member/CMOR filename.nc" (e.g.: esmrcp85/Amon/tas/bcc-csm1-1/r1i1p1/tas_Amon_bcc-csm1-1_esmrcp85_r1i1p1_200601-209912.nc ) Prof. Reto Knutti ETH Zürich http://www.iac.ethz.ch/ pointOfContact NetCDF IPCC IPCC-AR5 IPCC-DDC WGI climate simulation unrestricted: unrestricted eng; USA 0.0 360.0 -90.0 90.0 proleptic_gregorian 0001-01-01 2100-12-31 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: psu sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fossil_fuel_combustion Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2 Used in MIP table(s): CMOR Table Amon: Monthly Mean Atmospheric Fields and Some Surface Fields Comment in standard_output document: This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'tendency_of_X' means derivative of X with respect to time. 'Emission' means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). 'Emission' is a process entirely distinct from 're-emission' which is used in some standard names. The chemical formula for carbon dioxide is CO2. Fossil fuel combustion includes cement production and flaring of natural gas. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 runoff_flux Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_and_ice_sublimation_flux Sublimation over Sea Ice [CF-Standard Name]; unit: kg m-2 s-1 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu ocean_y_overturning_mass_streamfunction Ocean Y Overturning Mass Streamfunction [CF-Standard Name]; unit: kg s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: psu soil_carbon_content [CF-Standard Name]; unit: kg m-2 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fossil_fuel_combustion Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2 Used in MIP table(s): CMOR Table Amon: Monthly Mean Atmospheric Fields and Some Surface Fields Comment in standard_output document: This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'tendency_of_X' means derivative of X with respect to time. 'Emission' means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). 'Emission' is a process entirely distinct from 're-emission' which is used in some standard names. The chemical formula for carbon dioxide is CO2. Fossil fuel combustion includes cement production and flaring of natural gas. [CF-Standard Name]; unit: kg m-2 s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 surface_downward_x_stress surface_downward_x_stress [CF-Standard Name]; unit: N m-2 carbon_mass_flux_into_soil_from_vegetation_excluding_litter Total Carbon Mass Flux from Vegetation Directly to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: In some models part of carbon (e.g., root exudate) can go directly into the soil pool without entering litter. Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_altitude The surface called "surface" means the lower boundary of the atmosphere. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level.[CF-Standard Name]; unit: m sea_floor_depth_below_geoid Sea Floor Depth [CF-Standard Name]; unit: m plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m runoff_flux Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 soil_carbon_content [CF-Standard Name]; unit: kg m-2 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 water_flux_into_sea_water alias: water_flux_into_ocean "Water" means water in all phases. The water flux into sea water is the freshwater entering as a result of precipitation, evaporation, river inflow, sea ice effects and water flux relaxation and correction (if applied). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_grazing Carbon Mass Flux into Atmosphere due to Grazing on Land Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 soil_carbon_content [CF-Standard Name]; unit: kg m-2 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_grazing Carbon Mass Flux into Atmosphere due to Grazing on Land Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_downward_y_stress surface_downward_y_stress [CF-Standard Name]; unit: N m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_snow_and_ice_sublimation_flux Sublimation over Sea Ice [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_grazing Carbon Mass Flux into Atmosphere due to Grazing on Land Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa surface_snow_and_ice_sublimation_flux Sublimation over Sea Ice [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 ocean_volume Ocean Grid-Cell Volume [CF-Standard Name]; unit: m3 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 global_average_sea_level_change Global Average Sea Level Change [CF-Standard Name]; unit: m cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 lagrangian_tendency_of_air_pressure "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of air pressure, often called "omega", plays the role of the upward component of air velocity when air pressure is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of air pressure; downwards is positive.[CF-Standard Name]; unit: Pa s-1 eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: psu surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 lagrangian_tendency_of_air_pressure "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of air pressure, often called "omega", plays the role of the upward component of air velocity when air pressure is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of air pressure; downwards is positive.[CF-Standard Name]; unit: Pa s-1 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_grazing Carbon Mass Flux into Atmosphere due to Grazing on Land Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m runoff_flux Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K water_flux_into_sea_water alias: water_flux_into_ocean "Water" means water in all phases. The water flux into sea water is the freshwater entering as a result of precipitation, evaporation, river inflow, sea ice effects and water flux relaxation and correction (if applied). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 global_average_sea_level_change Global Average Sea Level Change [CF-Standard Name]; unit: m surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 cell_area Model Grid-Cell Area [CF-Standard Name]; unit: m2 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 lagrangian_tendency_of_air_pressure "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of air pressure, often called "omega", plays the role of the upward component of air velocity when air pressure is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of air pressure; downwards is positive.[CF-Standard Name]; unit: Pa s-1 convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 surface_snow_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 soil_carbon_content [CF-Standard Name]; unit: kg m-2 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 soil_carbon_content [CF-Standard Name]; unit: kg m-2 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 water_flux_into_sea_water alias: water_flux_into_ocean "Water" means water in all phases. The water flux into sea water is the freshwater entering as a result of precipitation, evaporation, river inflow, sea ice effects and water flux relaxation and correction (if applied). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 water_flux_into_sea_water alias: water_flux_into_ocean "Water" means water in all phases. The water flux into sea water is the freshwater entering as a result of precipitation, evaporation, river inflow, sea ice effects and water flux relaxation and correction (if applied). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 surface_downward_y_stress surface_downward_y_stress [CF-Standard Name]; unit: N m-2 surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 ocean_meridional_overturning_mass_streamfunction Ocean Meridional Overturning Mass Streamfunction [CF-Standard Name]; unit: kg s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 global_average_sea_level_change Global Average Sea Level Change [CF-Standard Name]; unit: m cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu runoff_flux Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 ocean_meridional_overturning_mass_streamfunction Ocean Meridional Overturning Mass Streamfunction [CF-Standard Name]; unit: kg s-1 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fossil_fuel_combustion Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2 Used in MIP table(s): CMOR Table Amon: Monthly Mean Atmospheric Fields and Some Surface Fields Comment in standard_output document: This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'tendency_of_X' means derivative of X with respect to time. 'Emission' means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). 'Emission' is a process entirely distinct from 're-emission' which is used in some standard names. The chemical formula for carbon dioxide is CO2. Fossil fuel combustion includes cement production and flaring of natural gas. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_y_stress surface_downward_y_stress [CF-Standard Name]; unit: N m-2 surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: 1 soil_moisture_content_at_field_capacity "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. The field capacity of soil is the maximum content of water it can retain against gravitational drainage. [CF-Standard Name]; unit: kg m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg soil_carbon_content [CF-Standard Name]; unit: kg m-2 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 global_average_sea_level_change Global Average Sea Level Change [CF-Standard Name]; unit: m air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 carbon_mass_flux_into_soil_from_vegetation_excluding_litter Total Carbon Mass Flux from Vegetation Directly to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: In some models part of carbon (e.g., root exudate) can go directly into the soil pool without entering litter. Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 carbon_mass_flux_into_soil_from_vegetation_excluding_litter Total Carbon Mass Flux from Vegetation Directly to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: In some models part of carbon (e.g., root exudate) can go directly into the soil pool without entering litter. Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 carbon_mass_flux_into_soil_from_vegetation_excluding_litter Total Carbon Mass Flux from Vegetation Directly to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: In some models part of carbon (e.g., root exudate) can go directly into the soil pool without entering litter. Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K surface_downward_x_stress surface_downward_x_stress [CF-Standard Name]; unit: N m-2 wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 lagrangian_tendency_of_air_pressure "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of air pressure, often called "omega", plays the role of the upward component of air velocity when air pressure is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of air pressure; downwards is positive.[CF-Standard Name]; unit: Pa s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 ocean_y_overturning_mass_streamfunction Ocean Y Overturning Mass Streamfunction [CF-Standard Name]; unit: kg s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 lagrangian_tendency_of_air_pressure "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of air pressure, often called "omega", plays the role of the upward component of air velocity when air pressure is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of air pressure; downwards is positive.[CF-Standard Name]; unit: Pa s-1 global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: psu sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m surface_snow_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 land_ice_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock. [CF-Standard Name]; unit: 0.01 carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_anthropogenic_emission [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fossil_fuel_combustion Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2 Used in MIP table(s): CMOR Table Amon: Monthly Mean Atmospheric Fields and Some Surface Fields Comment in standard_output document: This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'tendency_of_X' means derivative of X with respect to time. 'Emission' means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). 'Emission' is a process entirely distinct from 're-emission' which is used in some standard names. The chemical formula for carbon dioxide is CO2. Fossil fuel combustion includes cement production and flaring of natural gas. [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2 snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m s-1 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 soil_carbon_content [CF-Standard Name]; unit: kg m-2 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 soil_carbon_content [CF-Standard Name]; unit: kg m-2 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa surface_downward_x_stress surface_downward_x_stress [CF-Standard Name]; unit: N m-2 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa sea_surface_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m carbon_mass_flux_into_soil_from_vegetation_excluding_litter Total Carbon Mass Flux from Vegetation Directly to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: In some models part of carbon (e.g., root exudate) can go directly into the soil pool without entering litter. Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux "Water" means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called "sublimation".) In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 toa_outgoing_longwave_flux "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_crop_harvesting Carbon Mass Flux into Atmosphere due to Crop Harvesting Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Upward" indicates a vector component which is positive when directed upward (negative downward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Emission" means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_natural_sources [CF-Standard Name]; unit: kg m-2 s-1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 surface_downward_eastward_stress The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 snowfall_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 mole_fraction_of_carbon_dioxide_in_air Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: 1e-6 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 global_average_sea_level_change Global Average Sea Level Change [CF-Standard Name]; unit: m cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: 1 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K soil_moisture_content "moisture" means water in all phases contained in soil. "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. [CF-Standard Name]; unit: kg m-2 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 region Region Selection Index [CF-Standard Name]; unit: 1 land_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 0.01 cell_area Model Grid-Cell Area [CF-Standard Name]; unit: m2 sea_area_fraction Sea Area Fraction [CF-Standard Name]; unit: 0.01 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 transpiration_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change Net Carbon Mass Flux out of Atmophere due to Net Ecosystem Productivity on Land. Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: Natural flux of CO2 (expressed as a mass flux of carbon) from the atmosphere to the land calculated as the difference between uptake associated will photosynthesis and the release of CO2 from the sum of plant and soil respiration and fire. Positive flux is into the land. emissions from natural fires + human ignition fires as calculated by the fire module of the DGVM, but excluding any CO2 flux from fire included in fLuc, defined below (CO2 Flux to Atmosphere from Land Use Change). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Downward" indicates a vector component which is positive when directed downward (negative upward). The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "All land processes" means plant and soil respiration, photosynthesis, animal grazing, crop harvesting, natural fires and anthropogenic land use change. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. The quantity with standard name surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes is equal to the difference between the quantities with standard names surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes_excluding_anthropogenic_land_use_change and surface_net_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_anthropogenic_land_use_change. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for carbon dioxide is CO2. [CF-Standard Name]; unit: kg m-2 s-1 carbon_content_of_products_of_anthropogenic_land_use_change Carbon Mass in Products of Land Use Change Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name] cf:"Content" indicates a quantity per unit area. "products_of_anthropogenic_land_use_change" means the different end-products of wood that has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K global_average_steric_sea_level_change Global Average Steric Sea Level Change [CF-Standard Name]; unit: m atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 toa_incoming_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 eastward_wind-at10m "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 atmosphere_water_vapor_content "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_snow_and_ice_sublimation_flux Sublimation over Sea Ice [CF-Standard Name]; unit: kg m-2 s-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa toa_outgoing_longwave_flux_assuming_clear_sky A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 water_evaporation_flux_from_soil Water means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called sublimation.) In accordance with common usage in geophysical disciplines, flux implies per unit area, called flux density in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K surface_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 heterotrophic_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 surface_upward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2 wind_speed-at10m Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity. [CF-Standard Name-vertical_coordinate]; unit: m s-1 sea_surface_temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: K fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 soil_carbon_content [CF-Standard Name]; unit: kg m-2 carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 slow_soil_pool_carbon_content Carbon Mass in Slow Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of more than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Slow soil pool" refers to the decay of organic matter in soil with a characteristic period of more than a hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 moisture_content_of_soil_layer moisture_content_of_soil_layer [CF-Standard Name]; unit: kg m-2 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fossil_fuel_combustion Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2 Used in MIP table(s): CMOR Table Amon: Monthly Mean Atmospheric Fields and Some Surface Fields Comment in standard_output document: This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'tendency_of_X' means derivative of X with respect to time. 'Emission' means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). 'Emission' is a process entirely distinct from 're-emission' which is used in some standard names. The chemical formula for carbon dioxide is CO2. Fossil fuel combustion includes cement production and flaring of natural gas. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 surface_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 sea_surface_salinity The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: psu convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 runoff_flux Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes surface_net_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_all_land_processes [CF-Standard Name]; unit: kg m-2 s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: 1 gross_primary_productivity_of_carbon Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_primary_producivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. [CF-Standard Name]; unit: kg m-2 s-1 ocean_y_overturning_mass_streamfunction Ocean Y Overturning Mass Streamfunction [CF-Standard Name]; unit: kg s-1 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K surface_upwelling_shortwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K soil_carbon_content [CF-Standard Name]; unit: kg m-2 geopotential_height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m cloud_area_fraction_in_atmosphere_layer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction ofhorizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". [CF-Standard Name]; unit: 0.01 toa_outgoing_shortwave_flux "shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 convective_precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg water_flux_into_sea_water alias: water_flux_into_ocean "Water" means water in all phases. The water flux into sea water is the freshwater entering as a result of precipitation, evaporation, river inflow, sea ice effects and water flux relaxation and correction (if applied). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; unit: m s-1 northward_wind-at10m "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name-vertical_coordinate]; unit: m s-1 area_fraction "Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: 0.01 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: 1 root_depth Depth is the vertical distance below the surface. The root depth is maximum depth of soil reached by plant roots, from which they can extract moisture.[CF-Standard Name]; unit: m precipitation_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 specific_humidity-at2m "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name-vertical_coordinate]; unit: 1 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K surface_upwelling_longwave_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 tendency_of_atmosphere_mass_content_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fossil_fuel_combustion Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2 Used in MIP table(s): CMOR Table Amon: Monthly Mean Atmospheric Fields and Some Surface Fields Comment in standard_output document: This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_of_atmosphere_layer are used. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'tendency_of_X' means derivative of X with respect to time. 'Emission' means emission from a primary source located anywhere within the atmosphere, including at the lower boundary (i.e. earth's surface). 'Emission' is a process entirely distinct from 're-emission' which is used in some standard names. The chemical formula for carbon dioxide is CO2. Fossil fuel combustion includes cement production and flaring of natural gas. [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 surface_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 atmosphere_mass_of_carbon_dioxide atmosphere_mass_of_carbon_dioxide [CF-Standard Name]; unit: kg litter_carbon_content Carbon in Litter Pool [CF-Standard Name]; unit: kg m-2 air_temperature-at2m (maximum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K surface_downward_northward_stress The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1 medium_soil_pool_carbon_content Carbon Mass in Medium Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: medium is meant as lifetime of more than than 10 years and less than 100 years for reference climate conditions (20 C, no water limitations) Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Medium soil pool" refers to the decay of organic matter in soil with a characteristic period of between ten and one hundred years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 air_temperature-at2m (minimum) Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate-cell_method:time maximum]; unit: K relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K carbon_mass_flux_into_soil_from_litter Total Carbon Mass Flux from Litter to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 vegetation_carbon_content vegetation_carbon_content [CF-Standard Name]; unit: kg m-2 surface_runoff_flux The surface called "surface" means the lower boundary of the atmosphere. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change surface_upward_mass_flux_of_carbon_dioxide_expressed_as_carbon_due_to_emission_from_fires_excluding_anthropogenic_land_use_change [CF-Standard Name]; unit: kg m-2 s-1 litter_carbon_flux "Litter carbon" is dead inorganic material in or above the soil quantified as the mass of carbon which it contains. The litter carbon flux is the rate of production of litter. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 carbon_mass_flux_into_soil_from_vegetation_excluding_litter Total Carbon Mass Flux from Vegetation Directly to Soil Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: In some models part of carbon (e.g., root exudate) can go directly into the soil pool without entering litter. Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1 fast_soil_pool_carbon_content Carbon Mass in Fast Soil Pool Used in MIP table(s): CMOR Table Lmon: Monthly Mean Land Fields, Including Comment in standard_output document: fast is meant as lifetime of less than 10 years for reference climate conditions (20 C, no water limitations). Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:"Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_of_soil_layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. [CF-Standard Name]; unit: kg m-2 NetCDF 5339709 https://www.wdc-climate.de/ui/entry?acronym=ETH_cmip5_esms information collection n/a None n/a None n/a None