2026-04-06T12:32:11Z http://dmoai.cloud.dkrz.de/oai/provider

oai:wdcc.dkrz.de:iso_3889821 2026-04-05T23:08:11Z iso-wdcc-doi

wdc-climate.de:3889821 eng; USA collection PDRMIP_2012-2021 Marit Sandstad Center for International Climate Research not filled pointOfContact Dr. Gunnar Myhre Center for International Climate Research not filled pointOfContact 2021-08-11T12:04:12 ISO 19115 ISO 19115-2:2009 Precipitation Driver Response Model Intercomparison Project data sets 2013-2021 2021-10-06 publication 1 PDRMIP_2012-2021 doi:10.26050/WDCC/PDRMIP_2012-2021 Marit Sandstad Center for International Climate Research not filled principalInvestigator Tim Andrews Met Office Hadley Centre http://www.metoffice.gov.uk Email: timothy.andrews@metoffice.gov.uk author Olivier Boucher Institut Pierre-Simon Laplace / Centre National de Recherche Scientifique http://icmc.ipsl.fr/ Email: olivier.boucher@ipsl.fr author Dagmar Fläschner Max Planck Institute for Meteorology http://www.mpimet.mpg.de/ Email: dagmar.flaeschner@mpimet.mpg.de author Dr. Matthew Kasoar Imperial College London http://www.imperial.ac.uk/ Email: m.kasoar12@imperial.ac.uk author Viatcheslav V. Kharin Canadian Centre for Climate Modelling and Analysis http://www.cccma.ec.gc.ca Email: slava.kharin@canada.ca author Alf Kirkevåg Norwegian Meteorological Institute https://www.met.no Email: alf.kirkevag@met.no author Jean-Francois Lamarque National Center for Atmospheric Research http://www.ncar.ucar.edu/ Email: lamar@ucar.edu author Dr. Gunnar Myhre Center for International Climate Research not filled Email: gunnar.myhre@cicero.oslo.no author Johannes Mülmenstädt Universität Leipzig https://meteo.physgeo.uni-leipzig.de Email: johannes.muelmenstaedt@uni-leipzig.de author Dirk Jan Leo Oliviè Norwegian Meteorological Institute https://www.met.no Email: dirk.j.l.olivie@met.no author Bjørn Halvard Samset Center for International Climate Research not filled Email: b.h.samset@cicero.oslo.no author Marit Sandstad Center for International Climate Research not filled author Dr. Dilshad Shawki Imperial College London http://www.imperial.ac.uk/ Email: dilshad.shawki@gmail.com author Drew Shindell Duke University not filled Email: drew.shindell@duke.edu author Philip Stier University of Oxford not filled Email: Philip.Stier@physics.ox.ac.uk author Dr. Toshihiko Takemura Research Institute for Applied Mechanics, Kyushu University https://www.riam.kyushu-u.ac.jp/en/index-e.html Email: toshi@riam.kyushu-u.ac.jp author Apostolos Voulgarakis Imperial College London http://www.imperial.ac.uk/ Email: a.voulgarakis@imperial.ac.uk author Duncan Watson-Parris University of Oxford not filled Email: duncan.watson-parris@physics.ox.ac.uk author WDC Climate at DKRZ publisher Data output from the Precipitation Driver Response Model Intercomparison Project (PDRMIP). A set of 6 core experiments (a base, co2x2, ch4x3, solar, bcx10, sulx5 where the solar experiment has increased incoming solar radiation), 5 regional experiments (bcx10asia, sulx10asia, sulx10eur, sulred, sulasiared) and 7 phase 2 experiments (base2, cfc12, cfc11, n2o1p, ozone, lndus, bcslt) have been run by one or more of the participating models; CanESM2, MPI-ESM, NorESM1, NCAR-CESM1-CAM4, NCAR-CESM1-CAM5, MIROC-SPRINTARS, HadGEM2, HadGEM3, GISS-E2-R, IPSL-CM5A, ECHAM-HAM. Each of the experiments has been run (for the most part) both in coupled and fixed sst ocean setups. Time designations varry from model to model, however, all models have ran the coupled ocean experiments for 100 years and 15 years in the fixed sst experiments. Outputs varry between models, but include 2D and 3D monthly variables, 2D daily variables and fixed 2D fields. Dr. Gunnar Myhre Center for International Climate Research not filled pointOfContact NetCDF CESM1-CAM4 CESM1-CAM5 CanESM2 ECHAM-HAM GISS-E2-R HADGEM2 HadGEM3 CC-BY-SA-4.0: Creative Commons Attribution Share Alike 4.0 International https://creativecommons.org/licenses/by-sa/4.0/ eng; USA 0.0 360.0 -90.0 90.0 0011-01-01 2249-12-31 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 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 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 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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 atmosphere_mass_content_of_cloud_condensed_water alias: 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_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_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 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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 northward_sea_water_velocity A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). [CF-Standard Name]; unit: m 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_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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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_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_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 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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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 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: kg kg-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 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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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_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: kg kg-1 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 wind_speed-atNearSurface wind_speed-atNearSurface [CF-Standard Name-vertical_coordinate]; unit: m s-1 air_temperature-at2m (maximum per 24h) air_temperature-at2m (maximum per day) [CF-Standard Name-vertical_coordinate cell_method:time]; unit: K atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 volume_extinction_coefficient_in_air_due_to_ambient_aerosol_particles Aerosol Extinction Coefficient Comment: Aerosol Extinction at 550nm Used for mip era 'CMIP6' in CMOR MIP table(s): Table 6hrLev; Table Emon, provided in frequency(s): 6hrPt; mon, and for Realm(s): aerosol; atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: m-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 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 "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_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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: kg kg-1 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W 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: kg kg-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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [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 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 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 "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_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 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 "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 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 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_mass_content_of_cloud_condensed_water alias: 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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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: kg kg-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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_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 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_mass_content_of_cloud_condensed_water alias: 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 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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 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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 atmosphere_net_upward_convective_mass_flux atmosphere_net_upward_convective_mass_flux [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 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 relative_humidity relative_humidity [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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 atmosphere_net_upward_convective_mass_flux atmosphere_net_upward_convective_mass_flux [CF-Standard Name]; unit: kg m-2 s-1 air_pressure_at_convective_cloud_base air_pressure_at_convective_cloud_base [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: kg kg-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 relative_humidity relative_humidity [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 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_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_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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_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: kg kg-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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W 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 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_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg 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 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 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 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 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 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 1 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 shallow_convection_time_fraction shallow_convection_time_fraction [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 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 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: kg kg-1 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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: kg kg-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 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_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa 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 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_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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 1 convection_time_fraction convection_time_fraction [CF-Standard Name]; 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 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_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 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 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: kg kg-1 surface_snow_thickness surface_snow_thickness [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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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 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 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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 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_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 1 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: kg kg-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 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 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_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 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 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 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 surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 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_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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_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 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 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 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 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 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 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_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 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 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 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_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 eastward_sea_water_velocity A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward) [CF-Standard Name].; unit: m s-1 volume_extinction_coefficient_in_air_due_to_ambient_aerosol_particles Aerosol Extinction Coefficient Comment: Aerosol Extinction at 550nm Used for mip era 'CMIP6' in CMOR MIP table(s): Table 6hrLev; Table Emon, provided in frequency(s): 6hrPt; mon, and for Realm(s): aerosol; atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: m-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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 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 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 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 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_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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [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 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 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_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-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 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_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [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 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 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 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa convection_time_fraction convection_time_fraction [CF-Standard Name]; 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 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: kg kg-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 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_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 ocean_heat_y_transport Ocean Heat Y Transport [CF-Standard Name]; unit: W 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: 0.001 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 ocean_heat_x_transport_due_to_diffusion Ocean Heat X Transport due to Diffusion [CF-Standard Name]; unit: W 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 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_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [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 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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg m-2 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 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 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: kg kg-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_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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 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 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 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_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_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_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 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 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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [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 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_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 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 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_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 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_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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[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 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 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: kg kg-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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 1 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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_convective_cloud_top air_pressure_at_convective_cloud_top [CF-Standard Name]; unit: Pa mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[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 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 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 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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 relative_humidity relative_humidity [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 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 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_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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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: kg kg-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 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_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 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_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa 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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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 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_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 surface_downwelling_longwave_flux_in_air [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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2 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 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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 relative_humidity relative_humidity [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_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 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_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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_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 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 volume_extinction_coefficient_in_air_due_to_ambient_aerosol_particles Aerosol Extinction Coefficient Comment: Aerosol Extinction at 550nm Used for mip era 'CMIP6' in CMOR MIP table(s): Table 6hrLev; Table Emon, provided in frequency(s): 6hrPt; mon, and for Realm(s): aerosol; atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: m-1 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_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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 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_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 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 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: kg kg-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 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 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_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_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 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 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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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_water_vapor_due_to_sublimation_of_surface_snow_and_ice Surface Snow and Ice Sublimation Flux Comment: The snow and ice sublimation flux is the loss of snow and ice mass per unit area from the surface resulting from their direct conversion to water vapor that enters the atmosphere. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Amon; Table CF3hr; Table CFsubhr; Table Eday; Table ImonAnt; Table ImonGre; Table LImon, provided in frequency(s): 3hrPt; day; mon; subhrPt, and for Realm(s): atmos; atmosChem; land; landIce. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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_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_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 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: kg kg-1 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 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 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 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_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [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 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: kg kg-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 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: kg kg-1 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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_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: kg kg-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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [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_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 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 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_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 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [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 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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 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_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [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 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 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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 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 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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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: 0.001 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_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_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 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_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 region Region Selection Index [CF-Standard Name]; unit: 1 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[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 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 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 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 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 cell_area Model Grid-Cell Area [CF-Standard Name]; unit: m2 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 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 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 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_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: kg kg-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [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 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 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 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: kg kg-1 surface_snow_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 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 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 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 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_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_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [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 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_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg m-2 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 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_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [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 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_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_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 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 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 volume_extinction_coefficient_in_air_due_to_ambient_aerosol_particles Aerosol Extinction Coefficient Comment: Aerosol Extinction at 550nm Used for mip era 'CMIP6' in CMOR MIP table(s): Table 6hrLev; Table Emon, provided in frequency(s): 6hrPt; mon, and for Realm(s): aerosol; atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: m-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 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 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_content_of_cloud_condensed_water alias: 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 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 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_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 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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 1 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 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 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_mass_content_of_cloud_condensed_water alias: 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 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 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_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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 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 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_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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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_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: kg kg-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 "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 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 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: kg kg-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 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_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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [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_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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [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 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 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 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 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: kg kg-1 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 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_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [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 relative_humidity relative_humidity [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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg m-2 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 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1 shallow_convection_time_fraction shallow_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 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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 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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [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 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_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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: kg kg-1 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [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_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 relative_humidity relative_humidity [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 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 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 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 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [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 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 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: kg kg-1 volume_extinction_coefficient_in_air_due_to_ambient_aerosol_particles Aerosol Extinction Coefficient Comment: Aerosol Extinction at 550nm Used for mip era 'CMIP6' in CMOR MIP table(s): Table 6hrLev; Table Emon, provided in frequency(s): 6hrPt; mon, and for Realm(s): aerosol; atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: m-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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [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 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_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 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 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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[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 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 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 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_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [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 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 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 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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 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 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 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: kg kg-1 air_pressure_at_convective_cloud_base air_pressure_at_convective_cloud_base [CF-Standard Name]; unit: Pa water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 atmosphere_net_upward_convective_mass_flux atmosphere_net_upward_convective_mass_flux [CF-Standard Name]; unit: kg m-2 s-1 air_pressure_at_convective_cloud_top air_pressure_at_convective_cloud_top [CF-Standard Name]; unit: Pa 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 cell_area Model Grid-Cell Area [CF-Standard Name]; unit: m2 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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_upwelling_shortwave_flux_in_air_assuming_clear_sky surface_upwelling_shortwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [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 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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: kg kg-1 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [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 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 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 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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K cell_area Model Grid-Cell Area [CF-Standard Name]; unit: m2 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa 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 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_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 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_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 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 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W 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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa 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 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 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: kg kg-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 ocean_heat_x_transport Ocean Heat X Transport [CF-Standard Name]; unit: W ocean_heat_y_transport_due_to_diffusion Ocean Heat Y Transport due to Diffussion [CF-Standard Name]; unit: W ocean_heat_x_transport_due_to_bolus_advection Ocean Heat X Transport due to Bolus Advection [CF-Standard Name]; unit: W specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[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 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 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 surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 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_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 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 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 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 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 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_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 sea_ice_area_fraction sea_ice_area_fraction [CF-Standard Name]; unit: 0.01 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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 atmosphere_net_upward_convective_mass_flux atmosphere_net_upward_convective_mass_flux [CF-Standard Name]; unit: kg m-2 s-1 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg m-2 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: kg kg-1 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 air_pressure_at_convective_cloud_base air_pressure_at_convective_cloud_base [CF-Standard Name]; unit: Pa convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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: kg kg-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 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa 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 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_pressure_at_convective_cloud_base air_pressure_at_convective_cloud_base [CF-Standard Name]; unit: Pa relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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_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: kg kg-1 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg 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 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_convective_cloud_top air_pressure_at_convective_cloud_top [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 convection_time_fraction convection_time_fraction [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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; unit: 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 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 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: kg kg-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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 tendency_of_atmosphere_mass_content_of_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 tendency_of_atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; 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 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_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: kg kg-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 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_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 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 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: kg kg-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; 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 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_sulfate_dry_aerosol_particles_due_to_emission Total Direct Emission Rate of SO4 Comment: Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [CF-Standard Name]; unit: W m-2 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_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 Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg 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_mass_content_of_cloud_condensed_water alias: 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 mass_concentration_of_black_carbon_dry_aerosol_in_air Surface Concentration of Black Carbon Aerosol [CF-Standard Name]; unit: kg m-3 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 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: kg kg-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 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_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 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_water_vapor atmosphere_mass_content_of_water_vapor [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 tendency_of_atmosphere_mass_content_of_water_vapor_due_to_sublimation_of_surface_snow_and_ice Surface Snow and Ice Sublimation Flux Comment: The snow and ice sublimation flux is the loss of snow and ice mass per unit area from the surface resulting from their direct conversion to water vapor that enters the atmosphere. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Amon; Table CF3hr; Table CFsubhr; Table Eday; Table ImonAnt; Table ImonGre; Table LImon, provided in frequency(s): 3hrPt; day; mon; subhrPt, and for Realm(s): atmos; atmosChem; land; landIce. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 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 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 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_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [CF-Standard Name]; unit: W m-2 relative_humidity relative_humidity [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 atmosphere_mass_content_of_cloud_condensed_water alias: 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 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_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 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_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_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 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_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 shallow_convection_time_fraction shallow_convection_time_fraction [CF-Standard Name]; 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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [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 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 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_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [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 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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [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 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 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 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 toa_outgoing_shortwave_flux_assuming_clear_sky toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W 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_area_fraction surface_snow_area_fraction [CF-Standard Name]; unit: 0.01 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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 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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 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: kg kg-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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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 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 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 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_elemental_carbon_dry_aerosol_particles_due_to_emission Total Emission Rate of Black Carbon Aerosol Mass Comment: Integrate 3D emission field vertically to 2d field. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 relative_humidity relative_humidity [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 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 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [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 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 "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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 1 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa 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 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_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 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 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_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 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 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: kg kg-1 convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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_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_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [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 atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles Load of Black Carbon Aerosol Comment: The total dry mass of black carbon aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 relative_humidity-at2m relative_humidity-at2m [CF-Standard Name-vertical_coordinate]; unit: 0.01 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 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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 surface_downwelling_longwave_flux_in_air surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 relative_humidity relative_humidity [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 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 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 surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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_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 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 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa mass_concentration_of_sulfate_dry_aerosol_in_air Concentration of SO4 [CF-Standard Name]; unit: kg m-3 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 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 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 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_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 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 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 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 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: kg kg-1 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [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 specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[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 atmosphere_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Optical Thickness at 440nm Comment: AOD from the ambient aerosols (i.e., includes aerosol water). Does not include AOD from stratospheric aerosols if these are prescribed but includes other possible background aerosol types. Needs a comment attribute 'wavelength: 440nm' Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 1 air_pressure_at_mean_sea_level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles Ambient Aerosol Absorption Optical Thickness at 550nm Comment: Optical thickness of atmospheric aerosols at wavelength 550 nanometers. Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: 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 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_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [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 atmosphere_mass_content_of_sulfate_dry_aerosol_particles Load of SO4 Comment: The total dry mass of sulfate aerosol particles per unit area. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday; Table Emon, provided in frequency(s): day; mon, and for Realm(s): atmos; land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg 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 atmosphere_mass_content_of_water_vapor atmosphere_mass_content_of_water_vapor [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 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: kg kg-1 relative_humidity relative_humidity [CF-Standard Name]; unit: 0.01 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 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_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_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 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K convection_time_fraction convection_time_fraction [CF-Standard Name]; unit: 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 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 net_downward_radiative_flux_at_top_of_atmosphere_model Net Downward Flux at Top of Model [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 surface_downwelling_shortwave_flux_in_air surface_downwelling_shortwave_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 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_downwelling_longwave_flux_in_air_assuming_clear_sky surface_downwelling_longwave_flux_in_air_assuming_clear_sky [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 water_evapotranspiration_flux Snow Evaporation Comment: Water here 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. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies. Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land. Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [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 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 air_pressure_at_convective_cloud_top air_pressure_at_convective_cloud_top [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 NetCDF 9090637 https://www.wdc-climate.de/ui/entry?acronym=PDRMIP_2012-2021 information collection