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wdc-climate.de:2697853 eng; USA collection GIGRr4 Dr. Michael Lautenschlager Deutsches Klimarechenzentrum http://www.dkrz.de/ pointOfContact Kenneth Lo NASA Goddard Institute for Space Studies http://www.giss.nasa.gov/ pointOfContact 2019-07-02T10:57:30 ISO 19115 ISO 19115-2:2009 NASA-GISS:GISS-E2-R model output prepared for CMIP5 RCP4.5, served by ESGF 2014-01-06 publication 1 GIGRr4 doi:10.1594/WDCC/CMIP5.GIGRr4 Kenneth Lo NASA Goddard Institute for Space Studies http://www.giss.nasa.gov/ Email: cdkkl@giss.nasa.gov author WDC Climate at DKRZ publisher 'rcp45' is an experiment of the CMIP5 - Coupled Model Intercomparison Project Phase 5 (https://pcmdi.llnl.gov/mips/cmip5). 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 AR5 as well as others that extend beyond the AR5. 4.1 rcp45 (4.1 RCP4.5) - Version 1: Future projection (2006-2100) forced by RCP4.5. RCP4.5 is a representative concentration pathway which approximately results in a radiative forcing of 4.5 W m-2 at year 2100, relative to pre-industrial conditions. RCPs are time-dependent, consistent projections of emissions and concentrations of radiatively active gases and particles. 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 Entry name/title of data are specified according to the Data Reference Syntax (https://pcmdi.llnl.gov/mips/cmip5/docs/cmip5_data_reference_syntax.pdf) as activity/product/institute/model/experiment/frequency/modeling realm/MIP table/ensemble member/version number/variable name/CMOR filename.nc. Kenneth Lo NASA Goddard Institute for Space Studies http://www.giss.nasa.gov/ pointOfContact NetCDF CMIP5 GISS-E2-R IPCC IPCC-AR5 IPCC-DDC WGI climate simulation rcp45 unrestricted: unrestricted eng; USA 0.0 360.0 -90.0 90.0 proleptic_gregorian 2006-01-01 2300-12-16 mass_fraction_of_cloud_ice_in_air Mass fraction is used in the construction mass_fraction_of_X_in_Y, where X is a material constituent of Y. It means the ratio of the mass of Y to the mass of X (including Y). [CF-Standard Name]; unit: 1 water_flux_into_sea_water_due_to_sea_ice_thermodynamics Water Flux into Sea Water due to Sea Ice Thermodynamics [CF-Standard Name]; unit: kg m-2 s-1 mole_fraction_of_ozone_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-9 sea_surface_height_above_geoid sea_surface_height_above_geoid [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 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 net_primary_productivity_of_carbon Net primary productivity is the excess of gross_primary_producivity (rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, or "producers", especially by photosynthesising plants using sunlight for energy) over the rate at which they themselves respire some of this biomass (plant_respiration, assuming all producers to be plants). "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_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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_wet_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Wet deposition" means deposition by precipitation. [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of Dry Aerosol Primary Organic Matter [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 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 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 atmosphere_optical_thickness_due_to_pm1_ambient_aerosol Ambient Fine Aerosol Opitical Thickness at 550 nm [CF-Standard Name]; unit: 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 soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. located anywhere within the atmosphere, including at the lower boundary (i.e. earth' surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_sulfate_dry_aerosol Load of SO4 [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 tendency_of_atmosphere_mass_content_of_sulfur_dioxide_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "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. [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 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K northward_wind "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]; unit: m 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K northward_wind "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]; unit: m s-1 tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of Dry Aerosol Primary Organic Matter [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 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 tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_ammonium_dry_aerosol_in_air Concentration of NH4 [CF-Standard Name]; unit: kg m-3 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 upward_ocean_mass_transport Upward Ocean Mass Transport [CF-Standard Name]; unit: kg s-1 atmosphere_mass_content_of_dust_dry_aerosol Load of Dust [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_wet_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. "Wet deposition" means deposition by precipitation. [CF-Standard Name]; unit: kg m-2 s-1 soil_carbon_content [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 tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_wet_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Wet deposition" means deposition by precipitation. [CF-Standard Name]; unit: kg m-2 s-1 sea_water_mass Sea Water Mass [CF-Standard Name]; unit: kg eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m 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 square_of_upward_ocean_mass_transport Square of Upward Ocean Mass Transport [CF-Standard Name]; unit: kg2 s-2 tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 atmosphere_optical_thickness_due_to_ambient_aerosol Ambient Aerosol Opitical Thickness at 550 nm [CF-Standard Name]; unit: 1 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_emission [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [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_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m tendency_of_atmosphere_mass_content_of_ammonia_due_to_emission Total Emission Rate of NH3 [CF-Standard Name]; unit: kg m-2 s-1 sea_ice_y_transport sea_ice_y_transport [CF-Standard Name]; unit: kg 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 tendency_of_atmosphere_mass_content_of_sulfur_dioxide_due_to_wet_deposition [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 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K mole_fraction_of_nitrous_oxide_in_air Mole Fraction of N2O [CF-Standard Name]; unit: 1e-9 plant_respiration_carbon_flux [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_seasalt_dry_aerosol_in_air Surface Concentration of Seasalt [CF-Standard Name]; unit: kg m-3 mass_concentration_of_ammonium_dry_aerosol_in_air Concentration of NH4 [CF-Standard Name]; unit: kg m-3 moisture_content_of_soil_layer moisture_content_of_soil_layer [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_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 wind_speed 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]; unit: m s-1 soil_frozen_water_content Soil Frozen Water Content [CF-Standard Name]; unit: kg m-2 global_average_sea_level_change Global Average Sea Level Change [CF-Standard Name]; unit: m sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; 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 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 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_downwelling_shortwave_flux_in_air_assuming_clear_sky surface_downwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 tendency_of_atmosphere_mass_content_of_ammonium_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of NH4 [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol Load of Dry Aerosol Primary Organic Matter [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. located anywhere within the atmosphere, including at the lower boundary (i.e. earth' surface). "Emission" is a process entirely distinct from "re-emission" which is used in some standard names. [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 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 atmosphere_mass_content_of_cloud_ice 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. [CF-Standard Name]; unit: kg m-2 virtual_salt_flux_into_sea_water_due_to_sea_ice_thermodynamics Virtual Salt Flux into Sea Water due to Sea Ice Thermodynamics [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of SO4 [CF-Standard Name]; unit: kg m-2 s-1 wind_speed 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]; unit: m 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_net_upward_convective_mass_flux atmosphere_net_upward_convective_mass_flux [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_melt_flux The surface called "surface" means the lower boundary of the atmosphere. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. For unit "m day-1" the water equivalent of snow melt is given. [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of SO4 [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 wind_speed 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]; unit: m s-1 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W 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 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 tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. "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. [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 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 atmosphere_cloud_condensed_water_content "condensed_water" means liquid and ice. "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. [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_ammonium_dry_aerosol_due_to_wet_deposition Wet Deposition Rate of NH4+NH3 [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_sulfate_expressed_as_sulfur_dry_aerosol_due_to_wet_deposition [CF-Standard Name]; unit: kg m-2 s-1 sea_water_mass Sea Water Mass [CF-Standard Name]; unit: kg tendency_of_atmosphere_mass_content_of_sulfur_dioxide_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [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 air_pressure_at_convective_cloud_top air_pressure_at_convective_cloud_top [CF-Standard Name]; unit: Pa 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_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_wet_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. "Wet deposition" means deposition by precipitation. [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_biomass_burning_dry_aerosol_in_air Concentration of Biomass Burning Aerosol Used in MIP table(s): CMOR Table aero: Monthly Mean Aerosol-Related Fields Code list created on 2012-10-16 out of standard_output document (http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.xlsx ) cf:Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. [CF-Standard Name]; unit: kg m-3 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_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa cell_area Model Grid-Cell Area [CF-Standard Name]; unit: m2 square_of_sea_surface_temperature Square of Sea Surface Temperature [CF-Standard Name]; unit: K2 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_snow_area_fraction surface_snow_area_fraction [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_snow_thickness surface_snow_thickness [CF-Standard Name]; unit: m square_of_upward_ocean_mass_transport Square of Upward Ocean Mass Transport [CF-Standard Name]; unit: kg2 s-2 tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_wet_deposition Wet Deposition Rate of Dry Aerosol Primary Organic Matter [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 sea_ice_y_transport sea_ice_y_transport [CF-Standard Name]; unit: kg s-1 tendency_of_atmosphere_mass_content_of_sulfur_dioxide_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 atmosphere_mass_content_of_sulfate_dry_aerosol Load of SO4 [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 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_height_above_geoid sea_surface_height_above_geoid [CF-Standard Name]; unit: m atmosphere_mass_content_of_seasalt_dry_aerosol Load of Seasalt [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_secondary_particulate_organic_matter_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of Dry Aerosol Secondary Organic Matter [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 tendency_of_atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol_due_to_wet_deposition Wet Deposition Rate of Dry Aerosol Secondary Organic Matter [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_optical_thickness_due_to_ambient_aerosol Ambient Aerosol Opitical Thickness at 550 nm [CF-Standard Name]; unit: 1 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m atmosphere_absorption_optical_thickness_due_to_ambient_aerosol Ambient Aerosol Absorption Optical Thickness at 550 nm [CF-Standard Name]; 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 global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m virtual_salt_flux_into_sea_water_due_to_sea_ice_thermodynamics Virtual Salt Flux into Sea Water due to Sea Ice Thermodynamics [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg m-2 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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 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 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 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 wind_speed 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]; 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 northward_wind "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]; unit: m s-1 tendency_of_atmosphere_mass_content_of_ammonia_due_to_emission Total Emission Rate of NH3 [CF-Standard Name]; unit: kg m-2 s-1 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 mass_concentration_of_dust_dry_aerosol_in_air Concentration of Dust [CF-Standard Name]; unit: kg m-3 mole_fraction_of_ozone_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-9 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_flux_into_sea_water_due_to_sea_ice_thermodynamics Water Flux into Sea Water due to Sea Ice Thermodynamics [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 air_pressure_at_convective_cloud_base air_pressure_at_convective_cloud_base [CF-Standard Name]; unit: Pa 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 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_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 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu 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 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 1 tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "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. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 northward_wind "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]; 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_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 soil_carbon_content [CF-Standard Name]; unit: kg m-2 mass_fraction_of_cloud_liquid_water_in_air Mass fraction is used in the construction mass_fraction_of_X_in_Y, where X is a material constituent of Y. It means the ratio of the mass of Y to the mass of X (including Y). [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 atmosphere_mass_content_of_seasalt_dry_aerosol Load of Seasalt [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 atmosphere_mass_content_of_ammonium_dry_aerosol Load of NH4 [CF-Standard Name]; unit: kg m-2 convection_time_fraction convection_time_fraction [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 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W 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 atmosphere_net_upward_convective_mass_flux atmosphere_net_upward_convective_mass_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 tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [CF-Standard Name]; unit: kg m-2 s-1 surface_snow_melt_flux The surface called "surface" means the lower boundary of the atmosphere. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. For unit "m day-1" the water equivalent of snow melt is given. [CF-Standard Name]; unit: kg m-2 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 net_primary_productivity_of_carbon Net primary productivity is the excess of gross_primary_producivity (rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, or "producers", especially by photosynthesising plants using sunlight for energy) over the rate at which they themselves respire some of this biomass (plant_respiration, assuming all producers to be plants). "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 tendency_of_atmosphere_mass_content_of_ammonium_dry_aerosol_due_to_wet_deposition Wet Deposition Rate of NH4+NH3 [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_seasalt_dry_aerosol_in_air Surface Concentration of Seasalt [CF-Standard Name]; unit: kg m-3 atmosphere_optical_thickness_due_to_pm1_ambient_aerosol Ambient Fine Aerosol Opitical Thickness at 550 nm [CF-Standard Name]; unit: 1 heterotrophic_respiration_carbon_flux [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 mass_fraction_of_cloud_ice_in_air Mass fraction is used in the construction mass_fraction_of_X_in_Y, where X is a material constituent of Y. It means the ratio of the mass of Y to the mass of X (including Y). [CF-Standard Name]; unit: 1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 tendency_of_atmosphere_mass_content_of_sulfate_expressed_as_sulfur_dry_aerosol_due_to_wet_deposition [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_sulfur_dioxide_due_to_wet_deposition [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_ammonium_dry_aerosol Load of NH4 [CF-Standard Name]; unit: kg m-2 mole_fraction_of_nitrous_oxide_in_air Mole Fraction of N2O [CF-Standard Name]; unit: 1e-9 atmosphere_mass_content_of_dust_dry_aerosol Load of Dust [CF-Standard Name]; unit: kg m-2 mass_concentration_of_primary_particulate_organic_matter_dry_aerosol_in_air Surface Concentration of Dry Aerosol Primary Organic Matter [CF-Standard Name]; unit: kg m-3 surface_downward_heat_flux_in_sea_water surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2 sea_ice_x_transport sea_ice_x_transport [CF-Standard Name]; unit: kg s-1 tendency_of_atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of Dry Aerosol Secondary Organic Matter [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 tendency_of_atmosphere_mass_content_of_ammonium_dry_aerosol_due_to_dry_deposition Dry Deposition Rate of NH4 [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 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 mass_concentration_of_nitrate_dry_aerosol_in_air Concentration of NO3 Aerosol [CF-Standard Name]; unit: kg m-3 upward_ocean_mass_transport Upward Ocean Mass Transport [CF-Standard Name]; unit: kg s-1 mass_concentration_of_seasalt_dry_aerosol_in_air Surface Concentration of Seasalt [CF-Standard Name]; unit: kg m-3 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 heterotrophic_respiration_carbon_flux [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 mass_concentration_of_dust_dry_aerosol_in_air Concentration of Dust [CF-Standard Name]; unit: kg m-3 atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol Load of Dry Aerosol Secondary Organic Matter [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 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 ocean_heat_x_transport Ocean Heat X Transport [CF-Standard Name]; unit: W 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 mole_fraction_of_methane_in_air Mole Fraction of CH4 [CF-Standard Name]; unit: 1e-9 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 surface_diffuse_downwelling_shortwave_flux_in_air surface_diffuse_downwelling_shortwave_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 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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[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 tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "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. [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_cloud_condensed_water_content "condensed_water" means liquid and ice. "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. [CF-Standard Name]; unit: kg m-2 ocean_heat_y_transport Ocean Heat Y Transport [CF-Standard Name]; unit: W mass_concentration_of_nitrate_dry_aerosol_in_air Concentration of NO3 Aerosol [CF-Standard Name]; unit: kg m-3 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_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 tendency_of_atmosphere_mass_content_of_sulfur_dioxide_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "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. [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 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 tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_dry_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. "Dry deposition" means gravitational settling, impact scavenging and turbulent deposition. [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_secondary_particulate_organic_matter_dry_aerosol_in_air Surface Concentration of Dry Aerosol Secondary Organic Matter [CF-Standard Name]; unit: kg m-3 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 1 atmosphere_mass_content_of_black_carbon_dry_aerosol Load of Black Carbon Aerosol [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 mass_concentration_of_primary_particulate_organic_matter_dry_aerosol_in_air Surface Concentration of Dry Aerosol Primary Organic Matter [CF-Standard Name]; unit: kg m-3 tendency_of_atmosphere_mass_content_of_ammonia_due_to_dry_deposition Dry Deposition Rate of NH3 [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_ammonium_dry_aerosol_in_air Concentration of NH4 [CF-Standard Name]; unit: kg m-3 surface_snow_and_ice_sublimation_flux Sublimation over Sea Ice [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_convective_cloud_base air_pressure_at_convective_cloud_base [CF-Standard Name]; unit: Pa 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 tendency_of_atmosphere_mass_content_of_seasalt_dry_aerosol_due_to_wet_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Wet deposition" means deposition by precipitation. [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 tendency_of_atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol_due_to_wet_deposition Wet Deposition Rate of Dry Aerosol Secondary Organic Matter [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 atmosphere_mass_content_of_black_carbon_dry_aerosol Load of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-2 mass_concentration_of_secondary_particulate_organic_matter_dry_aerosol_in_air Surface Concentration of Dry Aerosol Secondary Organic Matter [CF-Standard Name]; unit: kg m-3 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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa region Region Selection Index [CF-Standard Name]; unit: 1 sea_area_fraction Sea Area Fraction [CF-Standard Name]; unit: 0.01 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 surface_snow_amount surface_snow_amount [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 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 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 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 sea_ice_x_transport sea_ice_x_transport [CF-Standard Name]; unit: kg s-1 air_pressure_at_convective_cloud_top air_pressure_at_convective_cloud_top [CF-Standard Name]; unit: Pa mass_fraction_of_cloud_liquid_water_in_air Mass fraction is used in the construction mass_fraction_of_X_in_Y, where X is a material constituent of Y. It means the ratio of the mass of Y to the mass of X (including Y). [CF-Standard Name]; unit: 1 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol Ambient Aerosol Absorption Optical Thickness at 550 nm [CF-Standard Name]; unit: 1 global_average_thermosteric_sea_level_change Global Average Thermosteric Sea Level Change [CF-Standard Name]; unit: m 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 tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Primary particulate organic matter " means all organic matter emitted directly to the atmosphere as particles except black carbon. The sum of primary_particulate_organic_matter_dry_aerosol and secondary_particulate_organic_matter_dry_aerosol is particulate_organic_matter_dry_aerosol. "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. [CF-Standard Name]; unit: kg m-2 s-1 northward_sea_water_velocity sea_water_y_velocity [CF-Standard Name]; 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 ocean_heat_x_transport Ocean Heat X Transport [CF-Standard Name]; unit: W mole_fraction_of_methane_in_air Mole Fraction of CH4 [CF-Standard Name]; unit: 1e-9 tendency_of_atmosphere_mass_content_of_black_carbon_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. "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. [CF-Standard Name]; unit: kg m-2 s-1 northward_wind "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]; 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 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 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 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 atmosphere_mass_content_of_cloud_ice 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. [CF-Standard Name]; unit: kg m-2 sea_water_potential_temperature sea_water_potential_temperature [CF-Standard Name]; unit: K 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 tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_emission "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Primary particulate organic matter " means all organic matter emitted directly to the atmosphere as particles except black carbon. The sum of primary_particulate_organic_matter_dry_aerosol and secondary_particulate_organic_matter_dry_aerosol is particulate_organic_matter_dry_aerosol. "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. [CF-Standard Name]; unit: kg m-2 s-1 mass_concentration_of_secondary_particulate_organic_matter_dry_aerosol_in_air Surface Concentration of Dry Aerosol Secondary Organic Matter [CF-Standard Name]; unit: kg m-3 tendency_of_atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_due_to_wet_deposition Wet Deposition Rate of Dry Aerosol Primary Organic Matter [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol Load of Dry Aerosol Primary Organic Matter [CF-Standard Name]; unit: kg m-2 sea_water_salinity sea_water_salinity [CF-Standard Name]; unit: psu 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 precipitation_flux_onto_canopy Precipitation onto Canopy [CF-Standard Name]; unit: kg m-2 s-1 ocean_heat_y_transport Ocean Heat Y Transport [CF-Standard Name]; unit: W mass_concentration_of_nitrate_dry_aerosol_in_air Concentration of NO3 Aerosol [CF-Standard Name]; unit: kg m-3 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 mass_concentration_of_dust_dry_aerosol_in_air Concentration of Dust [CF-Standard Name]; unit: kg m-3 mass_concentration_of_primary_particulate_organic_matter_dry_aerosol_in_air Surface Concentration of Dry Aerosol Primary Organic Matter [CF-Standard Name]; unit: kg m-3 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_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K northward_wind "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]; unit: m s-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 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_snow_amount surface_snow_amount [CF-Standard Name]; unit: kg 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 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_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 moisture_content_of_soil_layer moisture_content_of_soil_layer [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 tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_due_to_wet_deposition "tendency_of_X" means derivative of X with respect to time. "Content" indicates a quantity per unit area. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Wet deposition" means deposition by precipitation. [CF-Standard Name]; unit: kg m-2 s-1 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_due_to_emission [CF-Standard Name]; unit: kg m-2 s-1 precipitation_flux_onto_canopy Precipitation onto Canopy [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol Load of Dry Aerosol Secondary Organic Matter [CF-Standard Name]; unit: kg m-2 sea_ice_thickness sea_ice_thickness [CF-Standard Name]; unit: m plant_respiration_carbon_flux [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 water_evaporation_flux_from_canopy Evaporation from Canopy [CF-Standard Name]; unit: kg m-2 s-1 eastward_sea_water_velocity sea_water_x_velocity [CF-Standard Name]; unit: m 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 tendency_of_atmosphere_mass_content_of_ammonia_due_to_dry_deposition Dry Deposition Rate of NH3 [CF-Standard Name]; unit: kg m-2 s-1 NetCDF 6234155 https://www.wdc-climate.de/ui/entry?acronym=GIGRr4 information collection