Priority;Component;CMIP name;NorESM name or implementation status;CMOR implementation status;Frequencies;Long name;"Description";Units
1;aerosol;abs550aer;TAUA550;partly;mon;Ambient Aerosol Absorption Optical Thickness at 550 nm;"alias::atmosphere_absorption_optical_thickness_due_to_ambient_aerosol";1
1;aerosol;bldep; ;no;mon,subhrPt;Boundary Layer Depth;"Boundary layer depth";m
1;aerosol;ccn; ;no;mon;cloud condensation nuclei concentration at liquid cloud top;"proposed name: number_concentration_of_ambient_aerosol_in_air_at_liquid_water_cloud_top";m-3
1;aerosol;chepasoa; ;no;mon;total net production of anthropogenic secondary organic aerosol;"anthropogenic part of chepsoa";kg m-2 s-1
1;aerosol;chepsoa; ;no;mon;chemical production of dry aerosol secondary organic matter;"If model lumps SOA emissions with POA, then the sum of POA and SOA emissions is reported as OA emissions. """"mass"""" refers to the mass of primary organic matter, not mass of organic carbon alone.";kg m-2 s-1
1;aerosol;cltc; ;no;mon;Convective Cloud Cover Percentage;"Convective cloud area fraction for the whole atmospheric column, as seen from the surface or the top of the atmosphere. Includes only convective cloud.";%
1;aerosol;cod; ;no;mon;Cloud Optical Depth;"The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_thickness) on traversing the path. A coordinate variable of radiation_wavelength or radiation_frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. ""Cloud"" means the component of extinction owing to the presence of liquid or ice water particles. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity named by omitting the phrase.";1
1;aerosol;drybc;DRY_BC;partly;mon;dry deposition rate of black carbon aerosol mass;"Dry deposition includes gravitational settling, impact scavenging, and turbulent deposition.";kg m-2 s-1
1;aerosol;drydust;DRY_DUST;partly;mon;Dry Deposition Rate of Dust;"Dry deposition includes gravitational settling, impact scavenging, and turbulent deposition.";kg m-2 s-1
1;aerosol;drynh3; ;no;mon;Dry Deposition Rate of nh3;"dry deposition includes gravitational settling, impact scavenging, and turbulent deposition";kg m-2 s-1
1;aerosol;drynh4; ;no;mon;dry deposition rate of nh4;"dry deposition includes gravitational settling, impact scavenging, and turbulent deposition";kg m-2 s-1
1;aerosol;drynoy; ;no;mon;dry deposition rate of noy;"NOy is the sum of all simulated oxidized nitrogen species out of NO, NO2, HNO3, HNO4, NO3aerosol, NO3(radical), N2O5, PAN, other organic nitrates. Dry deposition includes gravitational settling, impact scavenging, and turbulent deposition.";kg m-2 s-1
1;aerosol;dryo3; ;no;mon;Dry Deposition Rate of o3;"dry deposition includes gravitational settling, impact scavenging, and turbulent deposition.";kg m-2 s-1
1;aerosol;dryoa; ; ;mon;dry deposition rate of dry aerosol total organic matter;"Tendency of atmosphere mass content of organic dry aerosol due to dry deposition: This is the sum of dry deposition of POA and dry deposition of SOA (see next two entries). 'Mass' refers to the mass of organic matter, not mass of organic carbon alone.  We recommend a scale factor of POM=1.4*OC, unless your model has more detailed info available. Was called dry_pom in old ACCMIP Excel table. Dry deposition includes gravitational settling, impact scavenging, and turbulent deposition.";kg m-2 s-1
1;aerosol;dryso2; ; ;mon;Dry Deposition Rate of so2;"dry deposition includes gravitational settling, impact scavenging, and turbulent deposition";kg m-2 s-1
1;aerosol;dryso4; ; ;mon;dry deposition rate of so4;"dry deposition includes gravitational settling, impact scavenging, and turbulent deposition";kg m-2 s-1
1;aerosol;dryss; ; ;mon;dry deposition rate of seasalt;"Dry deposition includes gravitational settling, impact scavenging, and turbulent deposition.";kg m-2 s-1
1;aerosol;emiaco; ; ;mon;total emission rate of anthropogenic co;"anthrophogenic  emission of CO";kg m-2 s-1
1;aerosol;emianox; ; ;mon;anthropogenic emission rate of nox;"Store flux as Nitrogen. Anthropogenic fraction. NOx=NO+NO2, Includes agricultural waste burning but no other biomass burning. Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emiaoa; ; ;mon;total emission of anthropogenic  organic aerosol;"anthropogenic part of emioa";kg m-2 s-1
1;aerosol;emibc; ; ;mon;emission rate of black carbon aerosol mass;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emibvoc; ; ;mon;total emission rate of biogenic nmvoc;"Integrate 3D emission field vertically to 2d field._If_ fixed molecular weight of NMVOC is not available in model, please provide in units of kilomole m-2 s-1 (i.e. kg m-2 s-1 as if model NMVOC had molecular weight of 1) and add a comment to your file.";kg m-2 s-1
1;aerosol;emico; ; ;mon;Total Emission Rate of co;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emidms; ; ;mon;Total Emission Rate of dms;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emidust; ; ;mon;total emission rate of dust;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emiisop; ; ;mon;Total Emission Rate of isoprene;"Integrate 3D emission field vertically to 2d field";kg m-2 s-1
1;aerosol;eminh3; ; ;mon;Total Emission Rate of nh3;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;eminox; ; ;mon;Total Emission Rate of nox;"NOx=NO+NO2. Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emioa; ; ;mon;primary emission and chemical production of dry aerosol organic matter;"This is the sum of total emission of POA and total production of SOA (emipoa+chepsoa). """"Mass"""" refers to the mass of organic matter, not mass of organic carbon alone. We recommend a scale factor of POM=1.4*OC, unless your model has more detailed info available.  Integrate 3D chemical production and emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emiso2; ; ;mon;Total Emission Rate of so2;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emiso4; ; ;mon;total direct emission rate of so4;"Direct primary emission does not include secondary sulfate production. Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emiss; ; ;mon;total emission rate of seasalt;"Integrate 3D emission field vertically to 2d field.";kg m-2 s-1
1;aerosol;emivoc; ; ;mon;total emission rate of nmvoc;"Integrate 3D emission field vertically to 2d field. _If_ fixed molecular weight of NMVOC is not available in model, please provide in units of kilomole m-2 s-1 (i.e. kg m-2 s-1 as if model NMVOC had molecular weight of 1) and add a comment to your file.";kg m-2 s-1
1;aerosol;lwp; ; ;mon;liquid water path;"""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.";kg m-2
1;aerosol;od440aer; ; ;mon;ambient aerosol optical thickness at 440 nm;"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: 440 nm""";1
1;aerosol;od550aer; ; ;mon;ambient aerosol optical thickness at 550 nm;"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: 550 nm""";1
1;aerosol;od550aerh2o; ; ;mon;aerosol water aod at 550nm;"proposed name: atmosphere_optical_thickness_due_to_water_ambient_aerosol";1
1;aerosol;od550bb; ; ;mon;Aerosol Optical Depth at 550nm due to Biomass Burning;"total organic aerosol AOD due to biomass burning (excluding so4, nitrate BB components)";1
1;aerosol;od550bc; ; ;mon;black carbon aod at 550nm;"The specification of a physical process by the phrase due_to_process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. ""Aerosol"" means the suspended liquid or solid particles in air (except cloud droplets).  ""Ambient aerosol"" is aerosol that has taken up ambient water through hygroscopic growth.  The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol.  Black carbon aerosol is composed of elemental carbon.  It is strongly light absorbing.";1
1;aerosol;od550csaer; ; ;mon;ambient aerosol optical thickness at 550 nm;"AOD from the ambient aerosols in clear skies if od550aer is for all-sky (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: 550 nm""";1
1;aerosol;od550dust; ; ;mon;Dust Optical Depth at 550nm;"alias::atmosphere_optical_thickness_due_to_dust_ambient_aerosol";1
1;aerosol;od550lt1aer; ; ;mon;Ambient Fine Aerosol Optical Depth at 550 nm;"od550 due to particles with wet diameter less than 1 um  (ambient here means wetted). When models do not include explicit size information, it can be assumed that all anthropogenic aerosols and natural secondary aerosols have diameter less than 1 um.";1
1;aerosol;od550no3; ; ;mon;Nitrate Aerosol OPtical Depth at 550nm;"proposed name: atmosphere_optical_thickness_due_to_nitrate_ambient_aerosol";1
1;aerosol;od550oa; ; ;mon;Total Organic Aerosol Optical Depth at 550nm;"alias::atmosphere_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol";1
1;aerosol;od550so4; ; ;mon;Sulfate Aerosol Optical Depth at 550nm;"proposed name: atmosphere_optical_thickness_due_to_sulfate_ambient_aerosol";1
1;aerosol;od550soa; ; ;mon;Particulate Organic Aersol Optical Depth at 550nm;"total organic aerosol AOD due to secondary aerosol formation";1
1;aerosol;od550ss; ; ;mon;Sea Salt Aersol Optical Depth at 550nm;"alias::atmosphere_optical_thickness_due_to_seasalt_ambient_aerosol";1
1;aerosol;od870aer; ; ;mon;Ambient Aerosol Optical Depth at 870 nm;"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: 870 nm""";1
1;aerosol;pod0; ; ;mon;Phytotoxic ozone dose;"Accumulated stomatal ozone flux over the threshold of 0 mol m-2 s-1; Computation: Time Integral of (hourly above canopy ozone concentration * stomatal conductance * Rc/(Rb+Rc) )";mol m-2 s-1
1;aerosol;ptp; ; ;mon;Tropopause Air Pressure;"2D monthly mean thermal tropopause calculated using WMO tropopause definition on 3d temperature";Pa
1;aerosol;zg500;Z500 ;no;6hrPt;Geopotential Height at 500 hPa;"geopotential height on the 500 hPa surface";m
1;atmos;albisccp; ;no;day,mon;ISCCP Mean Cloud Albedo;"ISCCP Mean Cloud Albedo. Time-means are weighted by the ISCCP Total Cloud Fraction {:cltisccp} - see  http://cfmip.metoffice.com/COSP.html";1
1;atmos;ccb;PCONVB;yes;day,mon;Air Pressure at Convective Cloud Base;"Where convective cloud is present in the grid cell, the instantaneous cloud base altitude should be that of the bottom of the lowest level containing convective cloud. Missing data should be reported in the absence of convective cloud. The time mean should be calculated from these quantities averaging over occasions when convective cloud is present only, and should contain missing data for occasions when no convective cloud is present during the meaning period.";Pa
1;atmos;cct;PCONVT;yes;day,mon;Air Pressure at Convective Cloud Top;"Where convective cloud is present in the grid cell, the instantaneous cloud top altitude should be that of the top of the highest level containing convective cloud. Missing data should be reported in the absence of convective cloud. The time mean should be calculated from these quantities averaging over occasions when convective cloud is present only, and should contain missing data for occasions when no convective cloud is present during the meaning period.";Pa
1;atmos;ch4;CH4;yes;mon,monC;CH4 volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.";mol mol-1
1;atmos;ch4global;ch4vmr;yes;mon,monC;Global Mean Mole Fraction of CH4;"Global Mean Mole Fraction of CH4";1e-09
1;atmos;ci;FREQZM;yes;mon;Fraction of Time Convection Occurs in Cell;"Fraction of time that convection occurs in the grid cell.";1
1;atmos;cl;CLOUD;yes;day,mon;Percentage Cloud Cover;"Percentage cloud cover, including both large-scale and convective cloud.";%
1;atmos;clcalipso; ;no;day,mon;CALIPSO Percentage Cloud Cover;"Percentage cloud cover at CALIPSO standard heights.";%
1;atmos;clhcalipso; ;no;day,mon;CALIPSO High Level Cloud Area Percentage;"Percentage cloud cover in layer centred on 220hPa";%
1;atmos;cli;CLDICE;yes;day,mon;Mass Fraction of Cloud Ice;"Includes both large-scale and convective cloud. This is calculated as the mass of cloud ice in the grid cell divided by the mass of air (including the water in all phases) in the grid cell. It includes precipitating hydrometeors ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";kg kg-1
1;atmos;clisccp; ;no;3hrPt,day,mon;ISCCP Cloud Area Fraction;"Percentage cloud cover in optical depth categories.";%
1;atmos;clivi;TGCLDIWP;yes;3hr,day,mon;Ice Water Path;"mass of ice water in the column divided by the area of the column (not just the area of the cloudy portion of the column). Includes precipitating frozen hydrometeors ONLY if the precipitating hydrometeor affects the calculation of radiative transfer in model.";kg m-2
1;atmos;cllcalipso; ;no;day,mon;CALIPSO Low Level Cloud Cover Percentage;"Percentage cloud cover in layer centred on 840hPa";%
1;atmos;clmcalipso; ;no;day,mon;CALIPSO Mid Level Cloud Percentage;"Percentage cloud cover in layer centred on 560hPa";%
1;atmos;clt;CLDTOT;no;3hr,day,mon;Total Cloud Cover Percentage;"Total cloud area fraction for the whole atmospheric column, as seen from the surface or the top of the atmosphere. Includes both large-scale and convective cloud.";%
1;atmos;cltcalipso; ;no;day,mon;CALIPSO Total Cloud Cover Percentage;"""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.";%
1;atmos;cltisccp; ;no;day,mon;ISCCP Total Cloud Cover Percentage;"Percentage total cloud cover, simulating ISCCP observations.";%
1;atmos;clw;CLDLIQ;yes;day,mon;Mass Fraction of Cloud Liquid Water;"Includes both large-scale and convective cloud. Calculate as the mass of cloud liquid water in the grid cell divided by the mass of air (including the water in all phases) in the grid cells. Precipitating hydrometeors are included ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";kg kg-1
1;atmos;clwvi;TGCLDLWP+TGCLDIWP;yes;3hr,day,mon;Condensed Water Path;"Mass of condensed (liquid + ice) water in the column divided by the area of the column (not just the area of the cloudy portion of the column). Includes precipitating hydrometeors ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";kg m-2
1;atmos;co2;CO2;yes;mon,monC;CO2 volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.";mol mol-1
1;atmos;co2mass;co2vmr;yes;mon,monC;Total Atmospheric Mass of CO2;"Total atmospheric mass of Carbon Dioxide";kg
1;atmos;edt; ;no;mon;Eddy Diffusivity Coefficient for Temperature Variable;"Vertical diffusion coefficient for temperature due to parametrised eddies";m2 s-1
1;atmos;epfz; ;no;mon;Upward Component of the Eliassen-Palm Flux;"Transformed Eulerian Mean Diagnostics Meridional component Fz of the Eliassen-Palm (EP) flux (Fy, Fz) derived from 6hr or higher frequency fields (use daily fields or 12 hr fields if the 6 hr are not available). Please use the definitions given by equation 3.5.3b of Andrews, Holton and Leovy text book, but scaled by density to have units m3 s-2.";m3 s-2
1;atmos;evspsbl;QFLX;yes;mon;Evaporation;"Evaporation at surface: flux of water into the atmosphere due to conversion of both liquid and solid phases to vapor (from underlying surface and vegetation)";kg m-2 s-1
1;atmos;evu; ;no;mon;Eddy Viscosity Coefficient for Momentum Variables;"Vertical diffusion coefficient for momentum due to parametrised eddies";m2 s-1
1;atmos;fco2antt; ;no;mon;Carbon Mass Flux into Atmosphere Due to All Anthropogenic Emissions of CO2;"This is requested only for the emission-driven coupled carbon climate model runs.  Does not include natural fire sources but, includes all anthropogenic sources, including fossil fuel use, cement production, agricultural burning, and sources associated with anthropogenic land use change excluding forest regrowth.";kg m-2 s-1
1;atmos;fco2fos; ;no;mon;Carbon Mass Flux into Atmosphere Due to Fossil Fuel Emissions of CO2;"This is the prescribed anthropogenic CO2 flux from fossil fuel use, including cement production, and flaring (but not from land-use changes, agricultural burning, forest regrowth, etc.)";kg m-2 s-1
1;atmos;fco2nat; ;no;mon;Surface Carbon Mass Flux into the Atmosphere Due to Natural Sources;"This is what the atmosphere sees (on its own grid).  This field should be equivalent to the combined natural fluxes of carbon  that account for natural exchanges between the atmosphere and land (nep) or ocean (fgco2) reservoirs.";kg m-2 s-1
1;atmos;hfls;LHFLX;yes;3hr,day,mon,subhrPt;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.";W m-2
1;atmos;hfss;SHFLX;yes;3hr,day,mon,subhrPt;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. 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.";W m-2
1;atmos;hur;RELHUM;yes;day,mon;Relative Humidity;"The relative humidity with respect to liquid water for T> 0 C, and with respect to ice for T<0 C.";%
1;atmos;hurs;RHREFHT;yes;day,mon;Near-Surface Relative Humidity;"The relative humidity with respect to liquid water for T> 0 C, and with respect to ice for T<0 C.";%
1;atmos;hursmax;RHREFHT;yes;day;Daily Maximum Near-Surface Relative Humidity;"";%
1;atmos;hursmin;RHREFHT;yes;day;Daily Minimum Near-Surface Relative Humidity;"";%
1;atmos;hus;Q;no;3hrPt,6hr,6hrPt,day,mon,subhrPt;Specific Humidity;"""specific"" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.";1
1;atmos;huss;QREFHT;yes;3hrPt,6hrPt,day,mon,subhrPt;Near-Surface Specific Humidity;"Near-surface (usually, 2 meter) specific humidity.";1
1;atmos;mc;CMFMC+CMFMCDZM;yes;day,mon,subhrPt;Convective Mass Flux;"The net mass flux should represent the difference between the updraft and downdraft components.  The flux is computed as the mass divided by the area of the grid cell.";kg m-2 s-1
1;atmos;n2o;N2O;yes;mon,monC;N2O volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.   The chemical formula of  nitrous oxide is N2O.";mol mol-1
1;atmos;n2oglobal;n2ovmr;no;mon,monC;Global Mean Mole Fraction of N2O;"Global mean Nitrous Oxide (N2O)";1e-09
1;atmos;o3;O3;no;mon,monC;Ozone volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.";mol mol-1
1;atmos;pctisccp; ;no;day,mon;x;"ISCCP Mean Cloud Top Pressure. Time-means are weighted by the ISCCP Total Cloud Fraction {:cltisccp} - see  http://cfmip.metoffice.com/COSP.html";Pa
1;atmos;pfull;PS;no;day,monC;Pressure on Model Levels;"Air pressure on model levels";Pa
1;atmos;phalf;PS;no;day,monC;Pressure on Model Half-Levels;"Air pressure on model half-levels";Pa
1;atmos;pr;PRECT;yes;1hr,3hr,day,mon,subhrPt;Precipitation;"includes both liquid and solid phases";kg m-2 s-1
1;atmos;prc;PRECC;yes;1hr,3hr,day,mon,subhrPt;Convective Precipitation;"Convective precipitation at surface; includes both liquid and solid phases.";kg m-2 s-1
1;atmos;prcsh; ;no;3hr;Precipitation Flux from Shallow Convection;"Convection precipitation from shallow convection";kg m-2 s-1
1;atmos;prsn;PRECSC+PRECSL;yes;3hr,day,mon;Snowfall Flux;"at surface; includes precipitation of all forms of water in the solid phase";kg m-2 s-1
1;atmos;prw;Q;yes;3hr,mon,subhrPt;Water Vapor Path;"vertically integrated through the atmospheric column";kg m-2
1;atmos;ps;PS;no;3hrPt,day,mon;Surface Air Pressure;"surface pressure (not mean sea-level pressure), 2-D field to calculate the 3-D pressure field from hybrid coordinates";Pa
1;atmos;psl;PSL;no;1hrPt,3hr,3hrPt,6hrPt,day,mon;Sea Level Pressure;"Sea Level Pressure";Pa
1;atmos;rld; ;no;mon;Downwelling Longwave Radiation;"Downwelling Longwave Radiation (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rld4co2; ; ;mon;Downwelling Longwave Radiation 4XCO2 Atmosphere;"Downwelling longwave radiation calculated using carbon dioxide concentrations increased fourfold (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rldcs; ;no;mon;Downwelling Clear-Sky Longwave Radiation;"Downwelling clear-sky longwave radiation (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rldcs4co2; ; ;mon;Downwelling Clear-Sky Longwave Radiation 4XCO2 Atmosphere;"Downwelling clear-sky longwave radiation calculated using carbon dioxide concentrations increased fourfold (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rlds;FLDS;yes;3hr,day,mon;Surface Downwelling Longwave Radiation;"The surface called ""surface"" means the lower boundary of the atmosphere. ""longwave"" means longwave radiation. Downwelling radiation is radiation from above. It does not mean ""net downward"". 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.";W m-2
1;atmos;rldscs;FLDSC;no;3hr,day,mon;Surface Downwelling Clear-Sky Longwave Radiation;"Surface downwelling clear-sky longwave radiation";W m-2
1;atmos;rlu; ;no;mon;Upwelling Longwave Radiation;"Upwelling longwave radiation (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rlu4co2; ; ;mon;Upwelling Longwave Radiation 4XCO2 Atmosphere;"Upwelling longwave radiation calculated using carbon dioxide concentrations increased fourfold (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rlucs; ;no;mon;Upwelling Clear-Sky Longwave Radiation;"Upwelling clear-sky longwave radiation  (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rlucs4co2; ; ;mon;Upwelling Clear-Sky Longwave Radiation 4XCO2 Atmosphere;"Upwelling clear-sky longwave radiation calculated using carbon dioxide concentrations increased fourfold (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rlus;FLDS+FLNS;yes;3hr,day,mon;Surface Upwelling Longwave Radiation;"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.";W m-2
1;atmos;rlut;FSNTOA-FSNT+FLNT;yes;1hrPt,3hr,day,mon,subhrPt;TOA Outgoing Longwave Radiation;"at the top of the atmosphere (to be compared with satellite measurements)";W m-2
1;atmos;rlut4co2; ; ;mon;TOA Outgoing Longwave Radiation 4XCO2 Atmosphere;"Top-of-atmosphere outgoing longwave radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rlutcs;FLUTC?;yes;3hr,day,mon;TOA Outgoing Clear-sky Longwave Radiation;"Upwelling clear-sky longwave radiation at top of atmosphere";W m-2
1;atmos;rlutcs4co2; ; ;mon;TOA Outgoing Clear-Sky Longwave Radiation 4XCO2 Atmosphere;"Top-of-atmosphere outgoing clear-sky longwave radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rsd; ;no;mon;Downwelling Shortwave Radiation;"Downwelling shortwave radiation (includes the fluxes at the surface and top-of-atmosphere)";W m-2
1;atmos;rsd4co2; ; ;mon;Downwelling Shortwave Radiation 4XCO2 Atmosphere;"Downwelling shortwave radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rsdcs; ;no;mon;Downwelling Clear-Sky Shortwave Radiation;"Downwelling clear-sky shortwave radiation (includes the fluxes at the surface and top-of-atmosphere)";W m-2
1;atmos;rsdcs4co2; ; ;mon;Downwelling Clear-Sky Shortwave Radiation 4XCO2 Atmosphere;"Downwelling clear-sky shortwave radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rsds;FSDS;yes;3hr,day,mon;Surface Downwelling Shortwave Radiation;"surface solar irradiance for UV calculations";W m-2
1;atmos;rsdscs;FSDSC;no;3hr,day,mon;Surface Downwelling Clear-Sky Shortwave Radiation;"surface solar irradiance clear sky for UV calculations";W m-2
1;atmos;rsdsdiff;SOLLD+SOLSD;yes;3hr;Surface Diffuse Downwelling Shortwave Radiation;"Downwelling radiation is radiation from above. It does not mean ""net downward"".  ""Diffuse"" radiation is radiation that has been scattered by particles in the atmosphere such as cloud droplets and aerosols. 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.  The surface called ""surface"" means the lower boundary of the atmosphere.  ""shortwave"" means shortwave radiation.";W m-2
1;atmos;rsdt;FSNTOA+FSUTOA;yes;3hr,day,mon,subhrPt;TOA Incident Shortwave Radiation;"Shortwave radiation incident at the top of the atmosphere";W m-2
1;atmos;rsu; ;no;mon;Upwelling Shortwave Radiation;"Upwelling shortwave radiation  (includes also the fluxes at the surface and top of atmosphere)";W m-2
1;atmos;rsu4co2; ; ;mon;Upwelling Shortwave Radiation 4XCO2 Atmosphere;"Upwelling Shortwave Radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rsucs; ;no;mon;Upwelling Clear-Sky Shortwave Radiation;"Upwelling clear-sky shortwave radiation  (includes the fluxes at the surface and TOA)";W m-2
1;atmos;rsucs4co2; ; ;mon;Upwelling Clear-Sky Shortwave Radiation 4XCO2 Atmosphere;"Upwelling clear-sky shortwave radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rsus;FSDS-FSNS;yes;3hr,day,mon;Surface Upwelling Shortwave Radiation;"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.";W m-2
1;atmos;rsuscs;FSDSC-FSNSC;no;3hr,day,mon;Surface Upwelling Clear-Sky Shortwave Radiation;"Surface Upwelling Clear-sky Shortwave Radiation";W m-2
1;atmos;rsut;FSUTOA;yes;3hr,day,mon,subhrPt;Top-of-Atmosphere Outgoing Shortwave Radiation;"at the top of the atmosphere";W m-2
1;atmos;rsut4co2; ; ;mon;TOA Outgoing Shortwave Radiation in 4XCO2 Atmosphere;"TOA Outgoing Shortwave Radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rsutcs;SOLIN-FSNTOAC;yes;3hr,day,mon;TOA Outgoing Clear-Sky Shortwave Radiation;"Calculated in the absence of clouds.";W m-2
1;atmos;rsutcs4co2; ; ;mon;TOA Outgoing Clear-Sky Shortwave Radiation 4XCO2 Atmosphere;"TOA Outgoing Clear-Sky Shortwave Radiation calculated using carbon dioxide concentrations increased fourfold";W m-2
1;atmos;rtmt;FSNT-FLNT;yes;mon;Net Downward Radiative Flux at Top of Model;"Net Downward Radiative Flux at Top of Model : I.e., at the top of that portion of the atmosphere where dynamics are explicitly treated by the model. This is reported only if it differs from the net downward radiative flux at the top of the atmosphere.";W m-2
1;atmos;rv850; ;no;6hrPt;Relative Vorticity at 850 hPa;"Relative vorticity is the upward component of the vorticity vector i.e. the component which arises from horizontal velocity.";s-1
1;atmos;sci;FREQSH;yes;mon;Fraction of Time Shallow Convection Occurs;"Fraction of time that shallow convection occurs in the grid cell.";1
1;atmos;sfcWind;U10;no;6hrPt,day,mon;Near-Surface Wind Speed;"near-surface (usually, 10 meters) wind speed.";m s-1
1;atmos;sfcWindmax;U10;yes;day;Daily Maximum Near-Surface Wind Speed;"Daily maximum near-surface (usually, 10 meters) wind speed.";m s-1
1;atmos;ta;T;no;1hrPt,3hrPt,6hrPt,day,mon,subhrPt;Air Temperature;"Air Temperature";K
1;atmos;ta700;T700;no;day;Air Temperature;"Air temperature at 700hPa";K
1;atmos;tas;TREFHT;yes;3hrPt,6hrPt,day,mon,subhrPt;Near-Surface Air Temperature;"near-surface (usually, 2 meter) air temperature";K
1;atmos;tasmax;TREFMXAV;yes;day,mon;Daily Maximum Near-Surface Air Temperature;"maximum near-surface (usually, 2 meter) air temperature (add cell_method attribute ""time: max"")";K
1;atmos;tasmin;TREFMNAV;yes;day,mon;Daily Minimum Near-Surface Air Temperature;"minimum near-surface (usually, 2 meter) air temperature (add cell_method attribute ""time: min"")";K
1;atmos;tauu;TAUX;yes;day,mon;Surface Downward Eastward Wind Stress;"Downward eastward wind stress at the surface";Pa
1;atmos;tauv;TAUY;yes;day,mon;Surface Downward Northward Wind Stress;"Downward northward wind stress at the surface";Pa
1;atmos;tnhus; ;no;mon,subhrPt;Tendency of Specific Humidity;"Tendency of Specific Humidity";s-1
1;atmos;tnhusa; ;no;mon;Tendency of Specific Humidity due to Advection;"Tendency of Specific Humidity due to Advection";s-1
1;atmos;tnhusc; ;no;mon;Tendency of Specific Humidity due to Convection;"Tendencies from cumulus convection scheme.";s-1
1;atmos;tnhusd; ;no;mon;Tendency of Specific Humidity due to Numerical Diffusion;"Tendency of specific humidity due to numerical diffusion.This includes any horizontal or vertical numerical moisture diffusion not associated with the parametrized moist physics or the resolved dynamics.  For example, any vertical diffusion which is part of the boundary layer mixing scheme should be excluded, as should any diffusion which is included in the terms from the resolved dynamics.   This term is required to check the closure of the moisture budget.";s-1
1;atmos;tnhusmp; ;no;mon;Tendency of Specific Humidity due to Model Physics;"Tendency of specific humidity due to model physics. This includes sources and sinks from parametrized moist physics (e.g. convection, boundary layer, stratiform condensation/evaporation, etc.) and excludes sources and sinks from resolved dynamics or from horizontal or vertical numerical diffusion not associated with model physics.  For example any diffusive mixing by the boundary layer scheme would be included.";s-1
1;atmos;tnhusscpbl; ;no;mon;Tendency of Specific Humidity Due to Stratiform Cloud and Precipitation and Boundary Layer Mixing;"Tendency of Specific Humidity Due to Stratiform Cloud and Precipitation and Boundary Layer Mixing  (to be specified only in  models which do not separate budget terms for stratiform cloud, precipitation and boundary layer schemes.  Includes all boundary layer terms including and diffusive terms.)";s-1
1;atmos;tnt;DTCORE+DTCOND+?;no;mon,subhrPt;Tendency of Air Temperature;"Tendency of Air Temperature";K s-1
1;atmos;tnta; ;no;mon;Tendency of Air Temperature due to Advection;"Tendency of Air Temperature due to Advection";K s-1
1;atmos;tntc; ;no;mon;Tendency of Air Temperature due to Convection;"Tendencies from cumulus convection scheme.";K s-1
1;atmos;tntmp; ;no;mon;Tendency of Air Temperature due to Model Physics;"Tendency of air temperature due to model physics. This includes sources and sinks from parametrized physics (e.g. radiation, convection, boundary layer, stratiform condensation/evaporation, etc.). It excludes sources and sinks from resolved dynamics and numerical diffusion not associated with parametrized physics.  For example, any vertical diffusion which is part of the boundary layer mixing scheme should be included, while numerical diffusion applied in addition to physics or resolved dynamics should be excluded.  This term is required to check the closure of the heat budget.";K s-1
1;atmos;tntr; ;no;1hrPt,mon;Tendency of Air Temperature due to Radiative Heating;"Tendency of Air Temperature due to Radiative Heating";K s-1
1;atmos;tntscpbl; ;no;mon;Tendency of Air Temperature Due to Stratiform Cloud and Precipitation and Boundary Layer Mixing;"Tendency of Air Temperature Due to Stratiform Cloud and Precipitation and Boundary Layer Mixing (to be specified only in  models which do not separate cloud, precipitation and boundary layer terms.  Includes all boundary layer terms including diffusive ones.)";K s-1
1;atmos;ts;TS;no;6hrPt,day,mon;Surface Temperature;"Temperature of the lower boundary of the atmosphere";K
1;atmos;ua;U;no;1hrPt,3hrPt,6hrPt,day,mon,subhrPt;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.)";m s-1
1;atmos;uas; ;no;3hrPt,6hrPt,day,mon;Eastward Near-Surface Wind;"Eastward component of the near-surface (usually, 10 meters)  wind";m s-1
1;atmos;va;V;no;1hrPt,3hrPt,6hrPt,day,mon,subhrPt;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.)";m s-1
1;atmos;vas; ;no;3hrPt,6hrPt,day,mon;Northward Near-Surface Wind;"Northward component of the near surface wind";m s-1
1;atmos;vortmean; ;no;6hrPt;atmosphere_relative_vorticity;"Mean vorticity over 850,700,600 hPa";s-1
1;atmos;wap;OMEGA;yes;1hrPt,3hrPt,6hr,day,mon,subhrPt;omega (=dp/dt);"Omega (vertical velocity in pressure coordinates, positive downwards)";Pa s-1
1;atmos;wap500;OMEGA500;no;day;omega (=dp/dt);"Omega (vertical velocity in pressure coordinates, positive downwards) at 500 hPa level;";Pa s-1
1;atmos;wbptemp; ;no;6hrPt;wet_bulb_potential_temperature;"Wet bulb potential temperature";K
1;atmos;zg;Z ;no;1hrPt,6hrPt,day,mon;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.";m
1;atmosChem;ch4;CH4;yes;mon,monC;CH4 volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.";mol mol-1
1;atmosChem;ch4global;ch4vmr;yes;mon,monC;Global Mean Mole Fraction of CH4;"Global Mean Mole Fraction of CH4";1e-09
1;atmosChem;n2o;N2O;yes;mon,monC;N2O volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.   The chemical formula of  nitrous oxide is N2O.";mol mol-1
1;atmosChem;n2oglobal;n2ovmr;no;mon,monC;Global Mean Mole Fraction of N2O;"Global mean Nitrous Oxide (N2O)";1e-09
1;atmosChem;o3;O3;no;mon,monC;Ozone volume mixing ratio;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.";mol mol-1
1;land;agesno; ; ;mon;Mean Age of Snow;"Age of Snow (when computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.  Reported as missing data in regions free of snow on land.";day
1;land;baresoilFrac; ;no;mon;Bare Soil Percentage Area Coverage;"Percentage of entire grid cell  that is covered by bare soil.";%
1;land;burntFractionAll;ANN_FAREA_BURNED;partly;mon;Percentage of Entire Grid cell  that is Covered by Burnt Vegetation (All Classes);"Percentage of grid cell burned due to all fires including natural and anthropogenic fires and those associated with anthropogenic land use change";%
1;land;cLitter;TOTLITC;partly;mon;Carbon Mass in Litter Pool;"alias::litter_carbon_content";kg m-2
1;land;cProduct; ;no;mon;Carbon Mass in Products of Land Use Change;"Carbon mass per unit area in that has been removed from the environment through  land use change.";kg m-2
1;land;cSoil;SOILC;no;mon;Carbon Mass in Model Soil Pool;"Carbon mass in the full depth of the soil model.";kg m-2
1;land;cVeg;TOTVEGC;partly;mon;Carbon Mass in Vegetation;"Carbon mass per unit area in vegetation.";kg m-2
1;land;cropFrac; ;no;mon;Percentage Crop Cover;"Percentage of entire grid cell  that is covered by crop.";%
1;land;evspsblsoi;QSOIL;partly;mon;Water Evaporation from Soil;"Water evaporation from soil (including sublimation).";kg m-2 s-1
1;land;evspsblveg;QVEGE;partly;mon;Evaporation from Canopy;"The canopy evaporation and sublimation (if present in model); may include dew formation as a negative flux.";kg m-2 s-1
1;land;fFire;COL_FIRE_CLOSS;partly;mon;Carbon Mass Flux into Atmosphere due to CO2 Emission from Fire;"CO2 emissions (expressed as a carbon mass flux per unit area) from natural fires and human ignition fires as calculated by the fire module of the dynamic vegetation model, but excluding any CO2 flux from fire included in fLuc (CO2 Flux to Atmosphere from Land Use Change).";kg m-2 s-1
1;land;fGrazing; ;no;mon;Carbon Mass Flux into Atmosphere due to Grazing on Land;"Carbon mass flux per unit area due to grazing on land";kg m-2 s-1
1;land;fHarvest;WOOD_HARVESTC;partly;mon;Carbon Mass Flux into Atmosphere due to Crop Harvesting;"Carbon mass flux per unit area due to crop harvesting";kg m-2 s-1
1;land;fLitterSoil; ;no;mon;Total Carbon Mass Flux from Litter to Soil;"Carbon mass flux per unit area into soil from litter (dead plant material in or above the soil).";kg m-2 s-1
1;land;fVegLitter;LITFALL;partly;mon;Total Carbon Mass Flux from Vegetation to Litter;"alias::litter_carbon_flux";kg m-2 s-1
1;land;fVegSoil;LITR1C_TO_SOIL1C+LITR2C_TO_SOIL2C+LITR3C_TO_SOIL3C;partly;mon;Total Carbon Mass Flux from Vegetation Directly to Soil;"Carbon mass flux per unit area from vegetation directly into soil, without intermediate conversion to litter.";kg m-2 s-1
1;land;gpp;GPP;partly;mon;Carbon Mass Flux out of Atmosphere due to Gross Primary Production on Land;"""Production of carbon"" means the production of biomass expressed as the mass of carbon which it contains. Gross primary production is the rate of synthesis of biomass from inorganic precursors by autotrophs (""producers""), for example, photosynthesis in plants or phytoplankton. The producers also respire some of this biomass and the difference is ""net_primary_production"". ""Productivity"" means production per unit area. The phrase ""expressed_as"" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A.";kg m-2 s-1
1;land;grassFrac; ;no;mon;Natural Grass Area Percentage;"Percentage of entire grid cell that is covered by natural grass.";%
1;land;hfdsn; ; ;mon;Downward Heat Flux into Snow Where Land over Land;"the net downward heat flux from the atmosphere into the snow that lies on land divided by the land area in the grid cell; reported as 0.0 for snow-free land regions or where the land fraction is 0.";W m-2
1;land;lai;TLAI;partly;mon;Leaf Area Index;"""X_area"" means the horizontal area occupied by X within the grid cell.";1
1;land;mrfso;SOILICE;partly;mon;Soil Frozen Water Content;"The mass per unit area (summed over all model layers) of frozen water.";kg m-2
1;land;mrro;QRUNOFF+QSNWCPICE;no;3hr,day,mon;Total Run-off;"The total run-off (including drainage through the base of the soil model) per unit area leaving the land portion of the grid cell.";kg m-2 s-1
1;land;mrros;QOVER;partly;mon;Surface Run off;"The total surface run off leaving the land portion of the grid cell (excluding drainage through the base of the soil model).";kg m-2 s-1
1;land;mrso;SOILLIQ+SOILICE;yes;day,mon;Total Soil Moisture Content;"the mass per unit area  (summed over all soil layers) of water in all phases.";kg m-2
1;land;mrsol; ;no;6hr,mon;Total water content of soil layer;"in each soil layer, the mass of water in all phases, including ice.  Reported as ""missing"" for grid cells occupied entirely by ""sea""";kg m-2
1;land;mrsos;SOILWATER_10CM;yes;3hrPt,6hr,day,mon;Moisture in Upper Portion of Soil Column;"The mass of water in all phases in the upper 10cm of the  soil layer.";kg m-2
1;land;nbp;NBP;partly;mon;Carbon Mass Flux out of Atmosphere due to Net Biospheric Production on Land;"This is the net mass flux of carbon from atmosphere into land, calculated as photosynthesis MINUS the sum of  plant and soil respiration, carbon fluxes from fire, harvest, grazing  and land use change. Positive flux is into the land.";kg m-2 s-1
1;land;npp;NPP;partly;mon;Carbon Mass Flux out of Atmosphere due to Net Primary Production on Land;"""Production of carbon"" means the production of biomass expressed as the mass of carbon which it contains. Net primary production is the excess of gross primary production (rate of synthesis of biomass from inorganic precursors) by autotrophs (""producers""), for example, photosynthesis in plants or phytoplankton, over the rate at which the autotrophs themselves respire some of this biomass. ""Productivity"" means production per unit area. The phrase ""expressed_as"" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A.";kg m-2 s-1
1;land;pastureFrac; ;no;mon;Percentage of Land which is Anthropogenic Pasture;"Percentage of entire grid cell  that is covered by anthropogenic pasture.";%
1;land;ra;AR;partly;mon;Carbon Mass Flux into Atmosphere due to Autotrophic (Plant) Respiration on Land;"Carbon mass flux per unit area into atmosphere due to autotrophic respiration on land (respiration by producers) [see rh for heterotrophic production]";kg m-2 s-1
1;land;residualFrac; ;no;mon;Percentage of Grid Cell that is Land but Neither Vegetation-Covered nor Bare Soil;"Percentage of entire grid cell  that is land and is covered by  neither vegetation nor bare-soil (e.g., urban, ice, lakes, etc.)";%
1;land;rh;HR;partly;mon;Carbon Mass Flux into Atmosphere due to Heterotrophic Respiration on Land;"Carbon mass flux per unit area into atmosphere due to heterotrophic respiration on land (respiration by consumers)";kg m-2 s-1
1;land;sbl; ;no;mon;Surface Snow and Ice Sublimation Flux;"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.";kg m-2 s-1
1;land;shrubFrac; ;no;mon;Percentage Cover by Shrub;"Percentage of entire grid cell  that is covered by shrub.";%
1;land;snc; ; ;day,mon;Snow Area Fraction;"Fraction of each grid cell that is occupied by snow that rests on land portion of cell.";%
1;land;snd; ; ;mon;Snow Depth;"where land over land, this is computed as the mean thickness of snow in the land portion of the grid cell (averaging over the entire land portion, including the snow-free fraction).  Reported as 0.0 where the land fraction is 0.";m
1;land;snm; ; ;mon;Surface Snow Melt;"The total surface snow melt rate on the land portion of the grid cell divided by the land area in the grid cell; report as zero for snow-free land regions and missing where there is no land.";kg m-2 s-1
1;land;snw;check if merged land sea-ice snw exists!;no;6hrPt,day,mon;Surface Snow Amount;"The mass of surface snow on the land portion of the grid cell divided by the land area in the grid cell; reported as missing where the land fraction is 0; excludes snow on vegetation canopy or on sea ice.";kg m-2
1;land;tran;QVEGT;partly;mon;Transpiration;"Transpiration (may include dew formation as a negative flux).";kg m-2 s-1
1;land;treeFrac; ;no;mon;Percentage Tree Cover;"Percentage of entire grid cell  that is covered by trees.";%
1;land;tslsi;TS;yes;3hrPt,day;Surface Temperature where Land or Sea Ice;"Surface temperature of all surfaces except open ocean.";K
1;land;tsn; ; ;mon;Snow Internal Temperature;"This temperature is averaged over all the snow in the grid cell that rests on land or land ice.  When computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.   Reported as missing in regions free of snow on land.";K
1;landIce;agesno; ; ;mon;Mean Age of Snow;"Age of Snow (when computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.  Reported as missing data in regions free of snow on land.";day
1;landIce;hfdsn; ; ;mon;Downward Heat Flux into Snow Where Land over Land;"the net downward heat flux from the atmosphere into the snow that lies on land divided by the land area in the grid cell; reported as 0.0 for snow-free land regions or where the land fraction is 0.";W m-2
1;landIce;mrfso;SOILICE;partly;mon;Soil Frozen Water Content;"The mass per unit area (summed over all model layers) of frozen water.";kg m-2
1;landIce;sbl; ;no;mon;Surface Snow and Ice Sublimation Flux;"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.";kg m-2 s-1
1;landIce;snc; ; ;day,mon;Snow Area Fraction;"Fraction of each grid cell that is occupied by snow that rests on land portion of cell.";%
1;landIce;snd; ; ;mon;Snow Depth;"where land over land, this is computed as the mean thickness of snow in the land portion of the grid cell (averaging over the entire land portion, including the snow-free fraction).  Reported as 0.0 where the land fraction is 0.";m
1;landIce;snm; ; ;mon;Surface Snow Melt;"The total surface snow melt rate on the land portion of the grid cell divided by the land area in the grid cell; report as zero for snow-free land regions and missing where there is no land.";kg m-2 s-1
1;landIce;snw;check if merged land sea-ice snw exists!;no;6hrPt,day,mon;Surface Snow Amount;"The mass of surface snow on the land portion of the grid cell divided by the land area in the grid cell; reported as missing where the land fraction is 0; excludes snow on vegetation canopy or on sea ice.";kg m-2
1;landIce;tsn; ; ;mon;Snow Internal Temperature;"This temperature is averaged over all the snow in the grid cell that rests on land or land ice.  When computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.   Reported as missing in regions free of snow on land.";K
1;ocean;agessc; ; ;mon;Sea Water Age Since Surface Contact;"Time elapsed since water was last in surface layer of the ocean.";yr
1;ocean;bigthetao; ;no;mon;Sea Water Conservative Temperature;"Sea water conservative temperature (this should be contributed only for models using conservative temperature as prognostic field)";degC
1;ocean;bigthetaoga; ;no;mon;Global Average Sea Water Conservative Temperature;"Diagnostic should be contributed only for models using conservative temperature as prognostic field.";degC
1;ocean;cfc11;cfc11;yes;mon;Moles Per Unit Mass of CFC-11 in Sea Water;"Mole concentration means number of moles per unit volume, also called ""molarity"", and is used in the construction ""mole_concentration_of_X_in_Y"", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as ""nitrogen"" or a phrase such as ""nox_expressed_as_nitrogen"". The chemical formula of CFC11 is CFCl3. The IUPAC name fof CFC11 is trichloro-fluoro-methane.";mol m-3
1;ocean;fgcfc12; ;no;mon;Surface Downward CFC12 flux;"gas exchange flux of CFC12";mol sec-1 m-2
1;ocean;hfbasin; ; ;mon;Northward Ocean Heat Transport;"Contains contributions from all physical processes affecting the northward heat transport, including resolved advection, parameterized advection, lateral diffusion, etc. Diagnosed here as a function of latitude and basin.   Use Celsius for temperature scale.";W
1;ocean;hfbasinpadv; ; ;mon;northward ocean heat transport due to parameterized eddy advection;"Contributions to heat transport from parameterized eddy-induced advective transport due to any subgrid advective process. Diagnosed here as a function of latitude and basin.  Use Celsius for temperature scale.";W
1;ocean;hfbasinpmadv; ; ;mon;northward ocean heat transport due to parameterized mesoscale advection;"Contributions to heat transport from parameterized mesoscale eddy-induced advective transport. Diagnosed here as a function of latitude and basin.  Use Celsius for temperature scale.";W
1;ocean;hfbasinpmdiff; ; ;mon;northward ocean heat transport due to parameterized mesoscale diffusion;"Contributions to heat transport from parameterized mesoscale eddy-induced diffusive transport (i.e., neutral diffusion). Diagnosed here as a function of latitude and basin.";W
1;ocean;hfbasinpsmadv; ; ;mon;northward ocean heat transport due to parameterized submesoscale advection;"Contributions to heat transport from parameterized mesoscale eddy-induced advective transport. Diagnosed here as a function of latitude and basin.  Use Celsius for temperature scale.";W
1;ocean;masscello;dp ;yes;mon;Ocean Grid-Cell Mass per area;"Tracer grid-cell mass per unit area used for computing tracer budgets. For Boussinesq models with static ocean grid cell thickness, masscello = rhozero*thickcello, where thickcello is static cell thickness and rhozero is constant Boussinesq reference density. More generally, masscello is time dependent and reported as part of Omon.";kg m-2
1;ocean;masso;dp;yes;mon;Sea Water Mass;"Total mass of liquid sea water. For Boussinesq models, report this diagnostic as Boussinesq reference density times total volume.";kg
1;ocean;mlotst; ; ;mon;Ocean Mixed Layer Thickness Defined by Sigma T;"Sigma T is potential density referenced to ocean surface.";m
1;ocean;mlotstmax; ; ;mon;Maximum Ocean Mixed Layer Thickness Defined by Sigma T;"Sigma T is potential density referenced to ocean surface.";m
1;ocean;mlotstmin; ; ;mon;Minimum Ocean Mixed Layer Thickness Defined by Sigma T;"Sigma T is potential density referenced to ocean surface.";m
1;ocean;msftbarot; ; ;mon;Ocean Barotropic Mass Streamfunction;"Streamfunction or its approximation for free surface models. See OMDP document for details.";kg s-1
1;ocean;msftmrho; ; ;mon;Ocean Meridional Overturning Mass Streamfunction;"Overturning mass streamfunction arising from all advective mass transport processes, resolved and parameterized.";kg s-1
1;ocean;msftmrhompa; ; ;mon;ocean meridional overturning mass streamfunction due to parameterized mesoscale advection;"CMIP5 called this ""due to Bolus Advection"".  Name change respects the more general physics of the mesoscale parameterizations.";kg s-1
1;ocean;msftmz; ; ;mon;Ocean Meridional Overturning Mass Streamfunction;"Overturning mass streamfunction arising from all advective mass transport processes, resolved and parameterized.";kg s-1
1;ocean;msftmzmpa; ; ;mon;ocean meridional overturning mass streamfunction due to parameterized mesoscale advection;"CMIP5 called this ""due to Bolus Advection"".  Name change respects the more general physics of the mesoscale parameterizations.";kg s-1
1;ocean;msftmzsmpa; ; ;mon;ocean meridional overturning mass streamfunction due to parameterized submesoscale advection;"Report only if there is a submesoscale eddy parameterization.";kg s-1
1;ocean;msftyrho; ; ;mon;Ocean Y Overturning Mass Streamfunction;"Overturning mass streamfunction arising from all advective mass transport processes, resolved and parameterized.";kg s-1
1;ocean;msftyrhompa; ; ;mon;ocean Y overturning mass streamfunction due to parameterized mesoscale advection;"CMIP5 called this ""due to Bolus Advection"".  Name change respects the more general physics of the mesoscale parameterizations.";kg s-1
1;ocean;msftyz; ; ;mon;Ocean Y Overturning Mass Streamfunction;"Overturning mass streamfunction arising from all advective mass transport processes, resolved and parameterized.";kg s-1
1;ocean;msftyzmpa; ; ;mon;ocean Y overturning mass streamfunction due to parameterized mesoscale advection;"CMIP5 called this ""due to Bolus Advection"".  Name change respects the more general physics of the mesoscale parameterizations.";kg s-1
1;ocean;msftyzsmpa; ; ;mon;ocean Y overturning mass streamfunction due to parameterized submesoscale advection;"Report only if there is a submesoscale eddy parameterization.";kg s-1
1;ocean;obvfsq; ; ;mon;Square of Brunt Vaisala Frequency in Sea Water;"The phrase ""square_of_X"" means X*X. Frequency is the number of oscillations of a wave per unit time. Brunt-Vaisala frequency is also sometimes called ""buoyancy frequency"" and is a measure of the vertical stratification of the medium.";s-2
1;ocean;omldamax; ; ;day;Mean Daily Maximum Ocean Mixed Layer Thickness Defined by Mixing Scheme;"The ocean mixed layer is the upper part of the ocean, regarded as being well-mixed. The base of the mixed layer defined by the mixing scheme is a diagnostic of ocean models.";m
1;ocean;pbo;dp;yes;mon;Sea Water Pressure at Sea floor;"""Sea water pressure"" is the pressure that exists in the medium of sea water.  It includes the pressure due to overlying sea water, sea ice, air and any other medium that may be present.";Pa
1;ocean;pso;NA;no;mon;Sea Water Pressure at Sea Water Surface;"The surface called ""surface"" means the lower boundary of the atmosphere.  ""Sea water pressure"" is the pressure that exists in the medium of sea water.  It includes the pressure due to overlying sea water, sea ice, air and any other medium that may be present.";Pa
1;ocean;sithick;hi;partly;day,mon;Sea-ice thickness;"Actual (floe) thickness of sea ice (NOT volume divided by grid area as was done in CMIP5)";m
1;ocean;so; ; ;mon;Sea Water Salinity;"Sea water salinity is the salt content of sea water, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. There are standard names for the more precisely defined salinity quantities: sea_water_knudsen_salinity, S_K (used for salinity observations between 1901 and 1966),  sea_water_cox_salinity, S_C (used for salinity observations between 1967 and 1977), sea_water_practical_salinity, S_P (used for salinity observations from 1978 to the present day), sea_water_absolute_salinity, S_A, sea_water_preformed_salinity, S_*, and sea_water_reference_salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows: S_P = (S_K - 0.03) * (1.80655 / 1.805) and S_P = S_C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_water_salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_water_practical_salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. The unit ""parts per thousand"" was used for sea_water_knudsen_salinity and sea_water_cox_salinity.";0.001
1;ocean;sob; ; ;mon;Sea water Salinity at Sea Floor;"Model prognostic salinity at bottom-most model grid cell";0.001
1;ocean;soga; ; ;mon;Global Mean Sea Water Salinity;"Sea water salinity is the salt content of sea water, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. There are standard names for the more precisely defined salinity quantities: sea_water_knudsen_salinity, S_K (used for salinity observations between 1901 and 1966),  sea_water_cox_salinity, S_C (used for salinity observations between 1967 and 1977), sea_water_practical_salinity, S_P (used for salinity observations from 1978 to the present day), sea_water_absolute_salinity, S_A, sea_water_preformed_salinity, S_*, and sea_water_reference_salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows: S_P = (S_K - 0.03) * (1.80655 / 1.805) and S_P = S_C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_water_salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_water_practical_salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. The unit ""parts per thousand"" was used for sea_water_knudsen_salinity and sea_water_cox_salinity.";0.001
1;ocean;sos; ; ;mon;Sea Surface Salinity;"Sea surface salinity is the salt content of sea water close to the sea surface, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. 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"" or one of the more precisely defined salinities should be used with a vertical coordinate axis. There are standard names for the precisely defined salinity quantities: sea_water_knudsen_salinity, S_K (used for salinity observations between 1901 and 1966), sea_water_cox_salinity, S_C (used for salinity observations between 1967 and 1977), sea_water_practical_salinity, S_P (used for salinity observations from 1978 to the present day), sea_water_absolute_salinity, S_A, sea_water_preformed_salinity, S_*, and sea_water_reference_salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows: S_P = (S_K - 0.03) * (1.80655 / 1.805) and S_P = S_C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_water_salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_water_practical_salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. The unit ""parts per thousand"" was used for sea_water_knudsen_salinity and sea_water_cox_salinity.";0.001
1;ocean;sosga; ; ;mon;Global Average Sea Surface Salinity;"Sea surface salinity is the salt content of sea water close to the sea surface, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. 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"" or one of the more precisely defined salinities should be used with a vertical coordinate axis. There are standard names for the precisely defined salinity quantities: sea_water_knudsen_salinity, S_K (used for salinity observations between 1901 and 1966), sea_water_cox_salinity, S_C (used for salinity observations between 1967 and 1977), sea_water_practical_salinity, S_P (used for salinity observations from 1978 to the present day), sea_water_absolute_salinity, S_A, sea_water_preformed_salinity, S_*, and sea_water_reference_salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows: S_P = (S_K - 0.03) * (1.80655 / 1.805) and S_P = S_C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_water_salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_water_practical_salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. The unit ""parts per thousand"" was used for sea_water_knudsen_salinity and sea_water_cox_salinity.";0.001
1;ocean;thetao;temp;yes;mon;Sea Water Potential Temperature;"Diagnostic should be contributed even for models using conservative temperature as prognostic field.";degC
1;ocean;thetaoga;temp;yes;mon;Global Average Sea Water Potential Temperature;"Diagnostic should be contributed even for models using conservative temperature as prognostic field";degC
1;ocean;thkcello;dz;yes;mon;Ocean Model Cell Thickness;"""Thickness"" means the vertical extent of a layer. ""Cell"" refers to a model grid-cell.";m
1;ocean;tob; ;no;mon;Sea Water Potential Temperature at Sea Floor;"Potential temperature at the ocean bottom-most grid cell.";degC
1;ocean;tos;SST (not written if coupling frequency is daily i.e. if no diurnal cycle);yes;3hrPt,day,mon;Sea Surface Temperature;"Temperature of upper boundary of the liquid ocean, including temperatures below sea-ice and floating ice shelves.";degC
1;ocean;tosga; ;no;mon;Global Average Sea Surface Temperature;"Temperature of upper boundary of the liquid ocean, including temperatures below sea-ice and floating ice shelves.";degC
1;ocean;umo; ; ;mon;Ocean Mass X Transport;"X-ward mass transport from resolved and parameterized advective transport.";kg s-1
1;ocean;uo; ; ;mon;Sea Water X Velocity;"Prognostic x-ward velocity component resolved by the model.";m s-1
1;ocean;vmo; ; ;mon;Ocean Mass Y Transport;"Y-ward mass transport from resolved and parameterized advective transport.";kg s-1
1;ocean;vo; ; ;mon;Sea Water Y Velocity;"Prognostic x-ward velocity component resolved by the model.";m s-1
1;ocean;volo;dz;yes;mon;Sea Water Volume;"Total volume of liquid sea water.";m3
1;ocean;wmo; ; ;mon;Upward Ocean Mass Transport;"Upward mass transport from resolved and parameterized advective transport.";kg s-1
1;ocean;wo; ; ;mon;Sea Water Vertical Velocity;"A velocity is a vector quantity. ""Upward"" indicates a vector component which is positive when directed upward (negative downward).";m s-1
1;ocean;zfullo;dz;partly;monC;Depth Below Geoid of Ocean Layer;"Depth below geoid";m
1;ocean;zhalfo;dz;partly;monC;Depth Below Geoid of Interfaces Between Ocean Layers;"Depth below geoid";m
1;ocean;zos;sealv;yes;mon;Sea Surface Height Above Geoid;"This is the dynamic sea level, so should have zero global area mean. It should not include inverse barometer depressions from sea ice.";m
1;ocean;zostoga;temp;yes;mon;Global Average Thermosteric Sea Level Change;"There is no CMIP6 request for zosga nor zossga.";m
1;ocnBgChem;chlos; ; ;mon;Sea Surface Total Chlorophyll Mass Concentration;"Sum of chlorophyll from all phytoplankton group concentrations at the sea surface.  In most models this is equal to chldiat+chlmisc, that is the sum of 'Diatom Chlorophyll Mass Concentration' plus 'Other Phytoplankton Chlorophyll Mass Concentration'";kg m-3
1;ocnBgChem;dfeos; ; ;mon;Surface Dissolved Iron Concentration;"dissolved iron in sea water is meant to include both Fe2+ and Fe3+ ions (but not, e.g., particulate detrital iron)";mol m-3
1;ocnBgChem;dissi13cos; ;no;mon;Surface Dissolved Inorganic 13Carbon Concentration;"Dissolved inorganic 14carbon (CO3+HCO3+H2CO3) concentration";mol m-3
1;ocnBgChem;dissi14cabioos; ;no;mon;Surface Abiotic Dissolved Inorganic 14Carbon Concentration;"Abiotic Dissolved inorganic 14carbon (CO3+HCO3+H2CO3) concentration";mol m-3
1;ocnBgChem;dissicabioos; ;no;mon;Surface Abiotic Dissolved Inorganic Carbon Concentration;"Abiotic Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration";mol m-3
1;ocnBgChem;dissicnatos; ;no;mon;Surface Natural Dissolved Inorganic Carbon Concentration;"Dissolved inorganic carbon (CO3+HCO3+H2CO3) concentration at preindustrial atmospheric xCO2";mol m-3
1;ocnBgChem;no3os; ; ;mon;Surface Dissolved Nitrate Concentration;"Mole concentration means moles (amount of substance) per unit volume and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y.";mol m-3
1;ocnBgChem;o2os; ; ;mon;Surface Dissolved Oxygen Concentration;"'Mole concentration' means number of moles per unit volume, also called""molarity"", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'.";mol m-3
1;ocnBgChem;o2satos; ; ;mon;Surface Dissolved Oxygen Concentration at Saturation;"""Mole concentration at saturation"" means the mole concentration in a saturated solution. Mole concentration means number of moles per unit volume, also called ""molarity"", and is used in the construction ""mole_concentration_of_X_in_Y"", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as ""nitrogen"" or a phrase such as ""nox_expressed_as_nitrogen"".";mol m-3
1;ocnBgChem;sios; ; ;mon;Surface Total Dissolved Inorganic Silicon Concentration;"Mole concentration means number of moles per unit volume, also called ""molarity"", and is used in the construction ""mole_concentration_of_X_in_Y"", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as ""nitrogen"" or a phrase such as ""nox_expressed_as_nitrogen"". ""Dissolved inorganic silicon"" means the sum of all inorganic silicon in solution (including silicic acid and its first dissociated anion SiO(OH)3-).";mol m-3
1;ocnBgChem;talknatos; ; ;mon;Surface Natural Total Alkalinity;"total alkalinity equivalent concentration (including carbonate, borate, phosphorus, silicon, and nitrogen components) at preindustrial atmospheric xCO2";mol m-3
1;seaIce;siconc;aice;partly;day,mon;Sea-ice area fraction;"Area fraction of grid cell covered by sea ice";%
1;seaIce;siconca; ;no;mon;Sea-ice area fraction;"Area fraction of grid cell covered by sea ice";%
1;seaIce;simass;hi*917+hs*330;partly;mon;Sea-ice mass per area;"Total mass of sea ice divided by grid-cell area";kg m-2
1;seaIce;sisnconc;fs;partly;mon;Snow area fraction;"Fraction of sea ice, by area, which is covered by snow, giving equal weight to every square metre of sea ice . Exclude snow that lies on land or land ice.";%
1;seaIce;sisnmass;fs*hs;no;mon;Snow mass per area;"Total mass of snow on sea ice divided by grid-cell area";kg m-2
1;seaIce;sisnthick;hs;partly;mon;Snow thickness;"Actual thickness of snow (snow volume divided by snow-covered area)";m
1;seaIce;sispeed; ;no;mon;Sea-ice speed;"Speed of ice (i.e. mean absolute velocity) to account for back-and-forth movement of the ice";m s-1
1;seaIce;sitemptop;Tsfc ?;partly;mon;Surface temperature of sea ice;"Report surface temperature of snow where snow covers the sea ice.";K
1;seaIce;sithick;hi;partly;day,mon;Sea-ice thickness;"Actual (floe) thickness of sea ice (NOT volume divided by grid area as was done in CMIP5)";m
1;seaIce;sitimefrac; ;no;mon;Fraction of time steps with sea ice;"Fraction of time steps of the averaging period during which sea ice is present (siconc >0 ) in a grid cell";1
1;seaIce;siu;uvel_d;partly;day,mon;X-component of sea ice velocity;"The x-velocity of ice on native model grid";m s-1
1;seaIce;siv;vvel_d;partly;day,mon;Y-component of sea ice velocity;"The y-velocity of ice on native model grid";m s-1
1;seaIce;sivol;aice*hi ?;no;mon;Sea-ice volume per area;"Total volume of sea ice divided by grid-cell area (this used to be called ice thickness in CMIP5)";m
2;atmos;clc; ;no;mon;Convective Cloud Area Fraction;"Include only convective cloud.";%
2;atmos;clic; ; ;mon;Mass Fraction of Convective Cloud Ice;"Calculated as the mass of convective cloud ice  in the grid cell divided by the mass of air (including the water in all phases) in the grid cell.  This includes precipitating hydrometeors ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";1
2;atmos;clis; ; ;mon;Mass Fraction of Stratiform Cloud Ice;"Calculated as the mass of stratiform cloud ice  in the grid cell divided by the mass of air (including the water in all phases) in the grid cell.  This includes precipitating hydrometeors ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";1
2;atmos;cls; ; ;mon;Percentage Cover of Stratiform Cloud;"""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 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"". In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes).";%
2;atmos;clwc; ; ;mon;Mass Fraction of Convective Cloud Liquid Water;"Calculated as the mass of convective cloud liquid water in the grid cell divided by the mass of air (including the water in all phases) in the grid cell.  This includes precipitating hydrometeors ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";1
2;atmos;clws; ; ;mon;Mass Fraction of Stratiform Cloud Liquid Water;"Calculated as the mass of stratiform cloud liquid water in the grid cell divided by the mass of air (including the water in all phases) in the grid cell.  This includes precipitating hydrometeors ONLY if the precipitating hydrometeors affect the calculation of radiative transfer in model.";1
2;atmos;dmc; ; ;mon;Deep Convective Mass Flux;"The net mass flux  represents the difference between the updraft and downdraft components.   This is calculated as the convective mass flux divided by the area of the whole grid cell (not just the area of the cloud).";kg m-2 s-1
2;atmos;epfy; ;no;mon;Northward Component of the Eliassen-Palm Flux;"Transformed Eulerian Mean Diagnostics Meridional component Fy of Eliassen-Palm (EP) flux (Fy, Fz) derived from 6hr or higher frequency fields (use daily fields or 12 hr fields if the 6 hr are not available). Please use the definitions given by equation 3.5.3a of Andrews, Holton and Leovy text book, but scaled by density to have units m3 s-2.";m3 s-2
2;atmos;mcd; ; ;mon;Downdraft Convective Mass Flux;"Calculated as the convective mass flux divided by the area of the whole grid cell (not just the area of the cloud).";kg m-2 s-1
2;atmos;mcu; ; ;mon;Convective Updraft Mass Flux;"In accordance with common usage in geophysical disciplines, ""flux"" implies per unit area, called ""flux density"" in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_methods should specify whether the average is over all the area or the area of updrafts only.";kg m-2 s-1
2;atmos;prra; ; ;mon;Rainfall rate;"In accordance with common usage in geophysical disciplines, ""flux"" implies per unit area, called ""flux density"" in physics.";kg m-2 s-1
2;atmos;smc; ; ;mon;Shallow Convective Mass Flux;"The net mass flux represents the difference between the updraft and downdraft components.  For models with a distinct shallow convection scheme, this is calculated as convective mass flux divided by the area of the whole grid cell (not just the area of the cloud).";kg m-2 s-1
2;atmos;utendepfd; ;no;mon;Tendency of eastward wind due to Eliassen-Palm Flux divergence;"Tendency of the zonal mean zonal wind due to the divergence of the Eliassen-Palm flux.";m s-2
2;atmos;utendnogw; ;no;1hrPt,mon;u-tendency nonorographic gravity wave drag;"Tendency of the eastward wind by parameterized nonorographic gravity waves.";m s-2
2;atmos;vtem; ;no;mon;Transformed Eulerian Mean northward wind;"Transformed Eulerian Mean Diagnostics v*, meridional component of the residual meridional circulation (v*, w*) derived from 6 hr or higher frequency data fields (use instantaneous daily fields or 12 hr fields if the 6 hr data are not available).";m s-1
2;atmos;vtendnogw; ;no;1hrPt,mon;v-tendency nonorographic gravity wave drag;"Tendency of the northward wind by parameterized nonorographic gravity waves.  (Note that CF name tables only have a general northward tendency for all gravity waves, and we need it separated by type.)";m s-2
2;atmos;wtem; ;no;mon;Transformed Eulerian Mean upward wind;"Transformed Eulerian Mean Diagnostics w*, meridional component of the residual meridional circulation (v*, w*) derived from 6 hr or higher frequency data fields (use instantaneous daily fields or 12 hr fields if the 6 hr data are not available). Scale height: 6950 m";m s-1
2;atmos;xgwdparam; ;no;mon;x_gravity_wave_drag_param;"Parameterised x-component of gravity wave drag";Pa
2;atmos;ygwdparam; ;no;mon;y_gravity_wave_drag_param;"Parameterised y- component of gravity wave drag";Pa
2;land;c3PftFrac; ;no;mon;Percentage Cover by C3 Plant Functional Type;"Percentage of entire grid cell  that is covered by C3 PFTs (including grass, crops, and trees).";%
2;land;c4PftFrac; ;no;mon;Percentage Cover by C4 Plant Functional Type;"Percentage of entire grid cell  that is covered by C4 PFTs (including grass and crops).";%
2;land;cCwd;CWDC;partly;mon;Carbon Mass in Coarse Woody Debris;"Carbon mass per unit area in woody debris (dead organic matter composed of coarse wood.  It is distinct from litter)";kg m-2
2;land;cLeaf;LEAFC;partly;mon;Carbon Mass in Leaves;"Carbon mass per unit area in leaves.";kg m-2
2;land;cLitterAbove; ;no;mon;Carbon Mass in Above-Ground Litter;"alias::surface_litter_carbon_content";kg m-2
2;land;cLitterBelow; ;no;mon;Carbon Mass in Below-Ground Litter;"alias::subsurface_litter_carbon_content";kg m-2
2;land;cRoot;LIVECROOTC+DEADCROOTC;partly;mon;Carbon Mass in Roots;"Carbon mass per unit area in roots, including fine and coarse roots.";kg m-2
2;land;cSoilFast;cSoilFast;partly;mon;Carbon Mass in Fast Soil Pool;"Carbon mass per unit area in fast soil pool. Fast means a lifetime of less than 10 years for reference climate conditions (20th century) in the absence of water limitations.";kg m-2
2;land;cSoilMedium;cSoilMedium;partly;mon;Carbon Mass in Medium Soil Pool;"Carbon mass per unit area in medium (rate) soil pool. Medium means a lifetime of more than than 10 years and less than 100 years for reference climate conditions (20th century) in the absence of water limitations.";kg m-2
2;land;cSoilSlow;cSoilSlow;partly;mon;Carbon Mass in Slow Soil Pool;"Carbon mass per unit area in slow soil pool. Slow means a lifetime of more than 100 years for reference climate (20th century) in the absence of water limitations.";kg m-2
2;land;landCoverFrac; ;no;mon;Percentage of Area by Vegetation/Land Cover Category;"Percentage of grid cell area occupied by different model vegetation/land cover categories. The categories may differ from model to model, depending on each model's subgrid land cover category definitions. Categories may include natural vegetation, anthropogenic vegetation, bare soil, lakes, urban areas, glaciers, etc. Sum of all should equal the fraction of the grid-cell that is land.";%
2;land;lwsnl; ; ;mon;Liquid Water Content of Snow Layer;"The total mass of liquid water contained interstitially within the whole depth of the snow layer of the land portion of a grid cell divided by the area of the land portion of the cell.";kg m-2
2;land;nppLeaf;LEAFC_ALLOC;partly;mon;Carbon Mass Flux due to NPP Allocation to Leaf;"This is the rate of carbon uptake by leaves due to NPP";kg m-2 s-1
2;land;nppRoot;FROOTC_ALLOC;partly;mon;Carbon Mass Flux due to NPP Allocation to Roots;"This is the rate of carbon uptake by roots due to NPP";kg m-2 s-1
2;land;nppWood;WOODC_ALLOC;partly;mon;Carbon Mass Flux due to NPP Allocation to Wood;"This is the rate of carbon uptake by wood due to NPP";kg m-2 s-1
2;land;prveg;QINTR;partly;mon;Precipitation onto Canopy;"The precipitation flux that is intercepted by the vegetation canopy (if present in model) before reaching the ground.";kg m-2 s-1
2;land;rGrowth;MR;partly;mon;Carbon Mass Flux into Atmosphere due to Growth Autotrophic Respiration on Land;"alias::surface_upward_carbon_mass_flux_due_to_plant_respiration_for_biomass_growth";kg m-2 s-1
2;land;rMaint;GR;partly;mon;Carbon Mass Flux into Atmosphere due to Maintenance Autotrophic Respiration on Land;"alias::surface_upward_carbon_mass_flux_due_to_plant_respiration_for_biomass_maintenance";kg m-2 s-1
2;land;sootsn; ; ;mon;Snow Soot Content;"the entire land portion of the grid cell is considered, with snow soot content set to 0.0 in regions free of snow.";kg m-2
2;land;treeFracPrimDec; ;no;mon;Percentage Cover by Primary Deciduous Tree;"Percentage of the entire grid cell  that is covered by total primary deciduous trees.";%
2;land;treeFracPrimEver; ;no;mon;Percentage Cover Primary Evergreen Tree;"Percentage of entire grid cell  that is covered by primary evergreen trees.";%
2;land;treeFracSecDec; ;no;mon;Percentage Cover of Secondary Deciduous Tree;"Percentage of entire grid cell  that is covered by secondary deciduous trees.";%
2;land;treeFracSecEver; ;no;mon;Percentage Cover Secondary Evergreen Tree;"Percentage of entire grid cell  that is covered by secondary evergreen trees.";%
2;land;tsl;TSOI;no;6hr,mon;Temperature of Soil;"Temperature of soil. Reported as missing for grid cells with no land.";K
2;landIce;lwsnl; ; ;mon;Liquid Water Content of Snow Layer;"The total mass of liquid water contained interstitially within the whole depth of the snow layer of the land portion of a grid cell divided by the area of the land portion of the cell.";kg m-2
2;landIce;sootsn; ; ;mon;Snow Soot Content;"the entire land portion of the grid cell is considered, with snow soot content set to 0.0 in regions free of snow.";kg m-2
2;ocean;cfc12;cfc12;yes;mon;Mole Concentration of CFC-12 in Sea water;"Mole concentration means number of moles per unit volume, also called ""molarity"", and is used in the construction ""mole_concentration_of_X_in_Y"", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as ""nitrogen"" or a phrase such as ""nox_expressed_as_nitrogen"". The chemical formula for CFC12 is CF2Cl2. The IUPAC name for CFC12 is dichloro-difluoro-methane.";mol m-3
2;ocean;evs; ; ;mon;Water Evaporation Flux Where Ice Free Ocean over Sea;"computed as the total mass of water vapor evaporating from the ice-free portion of the ocean  divided by the area of the ocean portion of the grid cell.";kg m-2 s-1
2;ocean;fgcfc11; ;no;mon;Surface Downward CFC11 flux;"gas exchange flux of CFC11";mol sec-1 m-2
2;ocean;fgsf6; ;no;mon;Surface Downward SF6 flux;"gas exchange flux of SF6";mol sec-1 m-2
2;ocean;ficeberg; ; ;mon;Water Flux into Sea Water From Icebergs;"computed as the iceberg melt water  flux into the ocean divided by the area of the ocean portion of the grid cell.";kg m-2 s-1
2;ocean;friver; ; ;mon;Water Flux into Sea Water From Rivers;"computed as the river flux of water into the ocean divided by the area of the ocean portion of the grid cell.";kg m-2 s-1
2;ocean;hfx; ; ;mon;Ocean Heat X Transport;"Contains all contributions to ""x-ward"" heat transport from resolved and parameterized processes.  Use Celsius for temperature scale.";W
2;ocean;hfy; ; ;mon;Ocean Heat Y Transport;"Contains all contributions to ""y-ward"" heat transport from resolved and parameterized processes. Use Celsius for temperature scale.";W
2;ocean;htovgyre; ; ;mon;Northward Ocean Heat Transport due to Gyre;"From all advective mass transport processes, resolved and parameterized.";W
2;ocean;htovovrt; ; ;mon;Northward Ocean Heat Transport due to Overturning;"From all advective mass transport processes, resolved and parameterized.";W
2;ocean;mfo; ; ;mon;Sea Water Transport;"Transport across_line means that which crosses a particular line on the Earth's surface; formally this means the integral along the line of the normal component of the transport.";kg s-1
2;ocean;sf6; ;no;mon;Moles Per Unit Mass of SF6 in Sea Water;"Mole concentration means number of moles per unit volume, also called ""molarity"", and is used in the construction ""mole_concentration_of_X_in_Y"", where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as ""nitrogen"" or a phrase such as ""nox_expressed_as_nitrogen"". The chemical formula of sulfur hexafluoride is SF6.";mol m-3
2;ocean;sltovgyre; ; ;mon;Northward Ocean Salt Transport due to Gyre;"From all advective mass transport processes, resolved and parameterized.";kg s-1
2;ocean;sltovovrt; ; ;mon;Northward Ocean Salt Transport due to Overturning;"From all advective mass transport processes, resolved and parameterized.";kg s-1
2;ocnBgChem;phabioos; ; ;mon;Surface Abiotic pH;"negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1.";1
2;ocnBgChem;phnatos; ; ;mon;Surface Natural pH;"negative log10 of hydrogen ion concentration with the concentration expressed as mol H kg-1.";1
2;ocnBgChem;phycos; ;no;mon;Sea Surface Phytoplankton Carbon Concentration;"sum of phytoplankton organic carbon component concentrations at the sea surface";mol m-3
2;seaIce;sfdsi; ;no;mon;Downward Sea Ice Basal Salt Flux;"This field is physical, and it arises since sea ice has a nonzero salt content, so it exchanges salt with the liquid ocean upon melting and freezing.";kg m-2 s-1
2;seaIce;siage;iage;partly;mon;Age of sea ice;"Age of sea ice";s
2;seaIce;siareaacrossline; ;no;mon;Sea ice area flux through straits;"net (sum of transport in all directions) sea ice area transport through the following four passages, positive into the Arctic Ocean 1. Fram Strait = (11.5W,81.3N to (10.5E,79.6N) 2. Canadian Archipelago = (128.2W,70.6N) to (59.3W,82.1N) 3. Barents opening = (16.8E,76.5N) to (19.2E,70.2N) 4. Bering Strait = (171W,66.2N) to (166W,65N)";m2 s-1
2;seaIce;siarean;aice;no;mon;Sea ice area North;"total area of sea ice in the Northern hemisphere";1e6 km2
2;seaIce;siareas;aice;no;mon;Sea ice area South;"total area of sea ice in the Southern hemisphere";1e6 km2
2;seaIce;sicompstren;strenght ?;partly;mon;Compressive sea ice strength;"Computed strength of the ice pack, defined as the energy (J m-2) dissipated per unit area removed from the ice pack under compression, and assumed proportional to the change in potential energy caused by ridging. For Hibler-type models, this is P (= P*hexp(-C(1-A)))";N m-1
2;seaIce;sidconcdyn; ;no;mon;sea-ice area fraction change from dynamics;"Total change in sea-ice area fraction through dynamics-related processes (advection, divergence...)";s-1
2;seaIce;sidconcth; ;no;mon;sea-ice area fraction change from thermodynamics;"Total change in sea-ice area fraction through thermodynamic processes";s-1
2;seaIce;sidivvel;divu ?;partly;monPt;Divergence of the sea-ice velocity field;"Divergence of sea-ice velocity field (first shear strain invariant)";s-1
2;seaIce;sidmassdyn; ;no;mon;sea-ice mass change from dynamics;"Total change in sea-ice mass through dynamics-related processes (advection,...) divided by grid-cell area";kg m-2 s-1
2;seaIce;sidmassevapsubl;evap_ai ?;partly;mon;sea-ice mass change through evaporation and sublimation;"The rate of change of sea-ice mass change through evaporation and sublimation divided by grid-cell area";kg m-2 s-1
2;seaIce;sidmassgrowthbot;congel ?;partly;mon;sea-ice mass change through basal growth;"The rate of change of sea ice mass due to vertical growth of existing sea ice at its base divided by grid-cell area.";kg m-2 s-1
2;seaIce;sidmassgrowthwat;frazil;partly;mon;sea-ice mass change through growth in supercooled open water (aka frazil);"The rate of change of sea ice mass due to sea ice formation in supercooled water (often through frazil formation) divided by grid-cell area. Together, sidmassgrowthwat and sidmassgrowthbot should give total ice growth";kg m-2 s-1
2;seaIce;sidmasslat; ;no;mon;Lateral sea ice melt rate;"The rate of change of sea ice mass through lateral melting divided by grid-cell area (report 0 if not explicitly calculated thermodynamically)";kg m-2 s-1
2;seaIce;sidmassmeltbot;meltb ?;partly;mon;sea-ice mass change through bottom melting;"The rate of change of sea ice mass through melting at the ice bottom divided by grid-cell area";kg m-2 s-1
2;seaIce;sidmassmelttop;meltt ?;partly;mon;sea-ice mass change through surface melting;"The rate of change of sea ice mass through melting at the ice surface divided by grid-cell area";kg m-2 s-1
2;seaIce;sidmasssi;snoice ?;partly;mon;sea-ice mass change through snow-to-ice conversion;"The rate of change of sea ice mass due to transformation of snow to sea ice divided by grid-cell area";kg m-2 s-1
2;seaIce;sidmassth; ;no;mon;sea-ice mass change from thermodynamics;"Total change in sea-ice mass from thermodynamic processes divided by grid-cell area";kg m-2 s-1
2;seaIce;sidmasstranx;transix;partly;mon;X-component of sea-ice mass transport;"Includes transport of both sea ice and snow by advection";kg s-1
2;seaIce;sidmasstrany;transiy;partly;mon;Y-component of sea-ice mass transport;"Includes transport of both sea ice and snow by advection";kg s-1
2;seaIce;siextentn;aice;no;mon;Sea ice extent North;"Total area of all Northern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice";1e6 km2
2;seaIce;siextents;aice;no;mon;Sea ice extent South;"Total area of all Southern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice";1e6 km2
2;seaIce;sifb; ;no;mon;Sea-ice freeboard;"Mean height of sea-ice surface (=snow-ice interface when snow covered) above sea level";m
2;seaIce;siflcondbot; ;no;mon;Net conductive heat fluxes in ice at the bottom;"the net heat conduction flux at the ice base";W m-2
2;seaIce;siflcondtop; ;no;mon;Net conductive heat flux in ice at the surface;"the net heat conduction flux at the ice surface";W m-2
2;seaIce;siflfwbot; ;no;mon;Freshwater flux from sea ice;"Total flux of fresh water from water into sea ice divided by grid-cell area; This flux is negative during ice growth (liquid water mass decreases, hence upward flux of freshwater), positive during ice melt (liquid water mass increases, hence downward flux of freshwater)";kg m-2 s-1
2;seaIce;siflfwdrain; ;no;mon;Freshwater flux from sea-ice surface;"Total flux of fresh water from sea-ice surface into underlying ocean. This combines both surface melt water that drains directly into the ocean and the drainage of surface melt pond. By definition, this flux is always positive.";kg m-2 s-1
2;seaIce;sifllatstop;flat_ai;partly;mon;Net latent heat flux over sea ice;"the net latent heat flux over sea ice";W m-2
2;seaIce;sifllwdtop;flwdn_ai;partly;mon;Downwelling longwave flux over sea ice;"the downwelling longwave flux over sea ice (always positive)";W m-2
2;seaIce;sifllwutop;flwup_ai;partly;mon;Upwelling Longwave Flux over Sea Ice;"the upwelling longwave flux over sea ice (always negative)";W m-2
2;seaIce;siflsenstop;fsens_ai;partly;mon;Net upward sensible heat flux over sea ice;"the net sensible heat flux over sea ice";W m-2
2;seaIce;siflsensupbot; ;no;mon;Net upward sensible heat flux under sea ice;"the net sensible heat flux under sea ice from the ocean";W m-2
2;seaIce;siflswdbot; ;no;mon;Downwelling shortwave flux under sea ice;"The downwelling shortwave flux underneath sea ice (always positive)";W m-2
2;seaIce;siflswdtop;fswdn_ai;partly;mon;Downwelling shortwave flux over sea ice;"The downwelling shortwave flux over sea ice (always positive by sign convention)";W m-2
2;seaIce;siflswutop;fswup_ai;partly;mon;Upwelling Shortwave Flux over Sea Ice;"The upwelling shortwave flux over sea ice (always negative)";W m-2
2;seaIce;sihc;qi;partly;mon;Sea-ice heat content per unit area;"Heat content of all ice in grid cell divided by total grid-cell area. Water at 0 Celsius is assumed to have a heat content of 0 J.  Does not include heat content of snow, but does include heat content of brine. Heat content is always negative, since both the sensible and the latent heat content of ice are less than that of water";J m-2
2;seaIce;simassacrossline; ;no;mon;Sea mass area flux through straits;"net (sum of transport in all directions) sea ice area transport through the following four passages, positive into the Arctic Ocean 1. Fram Strait = (11.5W,81.3N to (10.5E,79.6N) 2. Canadian Archipelago = (128.2W,70.6N) to (59.3W,82.1N) 3. Barents opening = (16.8E,76.5N) to (19.2E,70.2N) 4. Bering Strait = (171W,66.2N) to (166W,65N)";kg s-1
2;seaIce;sipr;rain_ai;partly;mon;Rainfall rate over sea ice;"mass of liquid precipitation falling onto sea ice divided by grid-cell area";kg m-2 s-1
2;seaIce;sishevel; ;no;monPt;Maximum shear of sea-ice velocity field;"Maximum shear of sea-ice velocity field (second shear strain invariant)";s-1
2;seaIce;sisnhc; ;no;mon;Snow-heat content per unit area;"Heat-content of all snow in grid cell divided by total grid-cell area. Snow-water equivalent at 0 Celsius is assumed to have a heat content of 0 J.  Does not include heat content of sea ice.";J m-2
2;seaIce;sistrxdtop;strairx;partly;mon;X-component of atmospheric stress on sea ice;"X-component of atmospheric stress on sea ice";N m-2
2;seaIce;sistrxubot;strocnx;partly;mon;X-component of ocean stress on sea ice;"X-component of ocean stress on sea ice";N m-2
2;seaIce;sistrydtop;strairy;partly;mon;Y-component of atmospheric stress on sea ice;"Y-component of atmospheric stress on sea ice";N m-2
2;seaIce;sistryubot;strocny;partly;mon;Y-component of ocean stress on sea ice;"Y-component of ocean stress on sea ice";N m-2
2;seaIce;sitempbot; ;no;mon;Temperature at ice-ocean interface;"Report temperature at interface, NOT temperature within lowermost model layer";K
2;seaIce;sitempsnic;Tsfc ?;partly;mon;Temperature at snow-ice interface;"Report surface temperature of ice where snow thickness is zero";K
2;seaIce;sivoln;aice*hi ;no;mon;Sea ice volume North;"total volume of sea ice in the Northern hemisphere";1e3 km3
2;seaIce;sivols;aice*hi ;no;mon;Sea ice volume South;"total volume of sea ice in the Southern hemisphere";1e3 km3
2;seaIce;sndmassdyn; ;no;mon;Snow Mass Rate of Change through Advection by Sea-ice Dynamics;"the rate of change of snow mass through advection with sea ice divided by grid-cell area";kg m-2 s-1
2;seaIce;sndmassmelt;melts;partly;mon;Snow Mass Rate of Change through Melt;"the rate of change of snow mass through melt divided by grid-cell area";kg m-2 s-1
2;seaIce;sndmasssi;snoice ?;no;mon;Snow Mass Rate of Change through Snow-to-Ice Conversion;"the rate of change of snow mass due to transformation of snow to sea ice divided by grid-cell area";kg m-2 s-1
2;seaIce;sndmasssnf;snow_ai ?;partly;mon;snow mass change through snow fall;"mass of solid precipitation falling onto sea ice divided by grid-cell area";kg m-2 s-1
2;seaIce;sndmasssubl; ;no;mon;Snow Mass Rate of Change through Evaporation or Sublimation;"the rate of change of snow mass through sublimation and evaporation divided by grid-cell area";kg m-2 s-1
2;seaIce;sndmasswindrif; ;no;mon;Snow Mass Rate of Change through Wind Drift of Snow;"the rate of change of snow mass through wind drift of snow (from sea-ice into the sea) divided by grid-cell area";kg m-2 s-1
2;seaIce;snmassacrossline; ;no;mon;Snow mass flux through straits;"net (sum of transport in all directions) snow mass transport through the following four passages, positive into the Arctic Ocean 1. Fram Strait = (11.5W,81.3N to (10.5E,79.6N) 2. Canadian Archipela";kg s-1
3;atmos;cfc113global; ;no;mon;Global Mean Mole Fraction of CFC113;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.  The chemical formula of CFC113 is CCl2FCClF2.  The IUPAC name for CFC113 is 1,1,2-trichloro-1,2,2-trifluoro-ethane.";1e-12
3;atmos;cfc11global; ;yes;mon;Global Mean Mole Fraction of CFC11;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.  The chemical formula of CFC11 is CFCl3.  The IUPAC name for CFC11 is trichloro-fluoro-methane.";1e-12
3;atmos;cfc12global; ;no;mon;Global Mean Mole Fraction of CFC12;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.  The chemical formula of CFC12 is CF2Cl2.  The IUPAC name for CFC12 is dichloro-difluoro-methane.";1e-12
3;atmos;cldicemxrat; ;no;6hrPt;Cloud Ice Mixing Ratio;"Cloud ice mixing ratio";1
3;atmos;cldwatmxrat; ;no;6hrPt;Cloud Water Mixing Ratio;"Cloud water mixing ratio";1
3;atmos;dtauc; ;no;6hrPt;Convective Cloud Optical Depth;"This is the in-cloud optical depth obtained by considering only the cloudy portion of the grid cell";1
3;atmos;dtaus; ;no;6hrPt;Stratiform Cloud Optical Depth;"This is the in-cloud optical depth obtained by considering only the cloudy portion of the grid cell.";1
3;atmos;grplmxrat; ;no;6hrPt;Graupel Mixing Ratio;"Graupel mixing ratio";1
3;atmos;hcfc22global; ;yes;mon;Global Mean Mole Fraction of HCFC22;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, whereX is a material constituent of Y.  A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemicalformula for HCFC22 is CHClF2.  The IUPAC name for HCFC22 is chloro-difluoro-methane.";1e-12
3;atmos;rainmxrat; ;no;6hrPt;rain_mixing_ratio;"Rain mixing ratio";1
3;atmos;snowmxrat; ;no;6hrPt;snow_mixing_ratio;"Snow mixing ratio";1
3;atmosChem;cfc113global; ;no;mon;Global Mean Mole Fraction of CFC113;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.  The chemical formula of CFC113 is CCl2FCClF2.  The IUPAC name for CFC113 is 1,1,2-trichloro-1,2,2-trifluoro-ethane.";1e-12
3;atmosChem;cfc11global; ;yes;mon;Global Mean Mole Fraction of CFC11;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.  The chemical formula of CFC11 is CFCl3.  The IUPAC name for CFC11 is trichloro-fluoro-methane.";1e-12
3;atmosChem;cfc12global; ;no;mon;Global Mean Mole Fraction of CFC12;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.  The chemical formula of CFC12 is CF2Cl2.  The IUPAC name for CFC12 is dichloro-difluoro-methane.";1e-12
3;atmosChem;hcfc22global; ;yes;mon;Global Mean Mole Fraction of HCFC22;"Mole fraction is used in the construction mole_fraction_of_X_in_Y, whereX is a material constituent of Y.  A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemicalformula for HCFC22 is CHClF2.  The IUPAC name for HCFC22 is chloro-difluoro-methane.";1e-12
3;land;pflw; ; ;mon;Liquid Water Content of Permafrost Layer;"*where land over land*, i.e., this is the total mass of liquid water contained within the permafrost layer within the land portion of a grid cell divided by the area of the land portion of the cell.";kg m-2
3;land;tpf; ; ;mon;Permafrost Layer Thickness;"The mean thickness of the permafrost layer in the land portion of the grid cell.  Reported as zero in permafrost-free regions.";m
3;landIce;pflw; ; ;mon;Liquid Water Content of Permafrost Layer;"*where land over land*, i.e., this is the total mass of liquid water contained within the permafrost layer within the land portion of a grid cell divided by the area of the land portion of the cell.";kg m-2
3;landIce;tpf; ; ;mon;Permafrost Layer Thickness;"The mean thickness of the permafrost layer in the land portion of the grid cell.  Reported as zero in permafrost-free regions.";m
3;ocean;difmxybo; ;no;monC;ocean momentum xy biharmonic diffusivity;"Lateral biharmonic viscosity applied to the momentum equations.";m4 s-1
3;ocean;difmxylo; ;no;monC;Ocean Momentum xy Laplacian Diffusivity;"Lateral Laplacian viscosity applied to the momentum equations.";m2 s-1
3;ocean;diftrbbo; ;no;monC;Ocean Tracer Bolus Biharmonic Diffusivity;"alias::ocean_tracer_bolus_biharmonic_diffusivity";m4 s-1
3;ocean;diftrblo; ;no;monC;Ocean Tracer Bolus Laplacian Diffusivity;"Ocean tracer diffusivity associated with parameterized eddy-induced advective transport. Sometimes this diffusivity is called the 'thickness' diffusivity. For CMIP5, this diagnostic was called 'ocean tracer bolus laplacian diffusivity'.  The CMIP6 name is physically more relevant.";m2 s-1
3;ocean;diftrebo; ;no;monC;Ocean Tracer Epineutral Biharmonic Diffusivity;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. ""epineutral diffusivity"" means a lateral diffusivity along a either a neutral or isopycnal density surface due to motion which is not resolved on the grid scale of an ocean model. The type of density surface is dependent on the model formulation. ""biharmonic diffusivity"" means diffusivity for use with a biharmonic diffusion operator.";m4 s-1
3;ocean;diftrelo; ;no;monC;ocean tracer epineutral laplacian diffusivity;"Ocean tracer diffusivity associated with parameterized eddy-induced diffusive transport oriented along neutral or isopycnal directions. Sometimes this diffusivity is called the neutral diffusivity or isopycnal diffusivity or Redi diffusivity.";m2 s-1
3;ocean;diftrxybo; ;no;monC;Ocean Tracer XY Biharmonic Diffusivity;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. ""xy diffusivity"" means the lateral along_coordinate component of diffusivity due to motion which is not resolved on the grid scale of the model.  xy diffusivities are used in some ocean models to counteract the numerical instabilities inherent in certain implementations of rotated neutral diffusion. ""biharmonic diffusivity"" means diffusivity for use with a biharmonic diffusion operator.";m4 s-1
3;ocean;diftrxylo; ;no;monC;Ocean Tracer XY Laplacian Diffusivity;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. ""xy diffusivity"" means the lateral along_coordinate component of diffusivity due to motion which is not resolved on the grid scale of the model.  xy diffusivities are used in some ocean models to counteract the numerical instabilities inherent in certain implementations of rotated neutral diffusion. ""laplacian diffusivity"" means diffusivity for use with a Laplacian diffusion operator.";m2 s-1
3;ocean;difvho; ;no;monC;Ocean Vertical Heat Diffusivity;"Vertical/dianeutral diffusivity applied to prognostic temperature field.";m2 s-1
3;ocean;difvmbo; ;no;monC;Ocean Vertical Momentum Diffusivity due to Background;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. The construction vertical_X_diffusivity means the vertical component of thediffusivity of X due to motion which is not resolved on the grid scale of the model. ""Due to background"" means caused by a time invariant imposed field which may be eitherconstant over the globe or spatially varying, depending on the ocean model used. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.";m2 s-1
3;ocean;difvmfdo; ;no;monC;Ocean Vertical Momentum Diffusivity due to Form Drag;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. The construction vertical_X_diffusivity means the vertical component of thediffusivity of X due to motion which is not resolved on the grid scale of the model. ""Due to form drag"" refers to a vertical diffusivity resulting from a model scheme representing  mesoscale eddy-induced form drag. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.";m2 s-1
3;ocean;difvmo; ;no;monC;Ocean Vertical Momentum Diffusivity;"""Vertical momentum diffusivity"" means the vertical component of the diffusivity of momentum due to motion which is not resolved on the grid scale of the model.";m2 s-1
3;ocean;difvmto; ;no;monC;Ocean Vertical Momentum Diffusivity due to Tides;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. The construction vertical_X_diffusivity means the vertical component of thediffusivity of X due to motion which is not resolved on the grid scale of the model. ""Due to tides"" means due to all astronomical gravity changes which manifest as tides.No distinction is made between different tidal components. The specification of a physicalprocess by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.";m2 s-1
3;ocean;difvso; ;no;monC;ocean vertical salt diffusivity;"Vertical/dianeutral diffusivity applied to prognostic salinity field.";m2 s-1
3;ocean;difvtrbo; ;no;monC;Ocean Vertical Tracer Diffusivity due to Background;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. The construction vertical_X_diffusivity means the vertical component of thediffusivity of X due to motion which is not resolved on the grid scale of the model. ""Due to background"" means caused by a time invariant imposed field which may be eitherconstant over the globe or spatially varying, depending on the ocean model used. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.";m2 s-1
3;ocean;difvtrto; ;no;monC;Ocean Vertical Tracer Diffusivity due to Tides;"Diffusivity is also sometimes known as the coefficient of diffusion. Diffusion occurs as a result of a gradient in the spatial distribution of mass concentration, temperature or momentum.  The diffusivity may be very different in the vertical and horizontal directions. The construction vertical_X_diffusivity means the vertical component of thediffusivity of X due to motion which is not resolved on the grid scale of the model. ""Due to tides"" means due to all astronomical gravity changes which manifest as tides.No distinction is made between different tidal components. The specification of a physicalprocess by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.";m2 s-1
3;ocean;dispkevfo; ;no;monC;Ocean Kinetic Energy Dissipation Per Unit Area due to Vertical Friction;"Friction, leading to the dissipation of kinetic energy, arises in ocean models as a result of the viscosity of sea water.  Generally, the  lateral (xy) viscosity is given a large value to maintain the numerical stability of the model.  In contrast, the vertical viscosity is usually much smaller. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.";W m-2
3;ocean;dispkexyfo; ;no;monC;ocean kinetic energy dissipation per unit area due to xy friction;"Depth integrated impacts on kinetic energy arising from lateral frictional dissipation associated with Laplacian and/or biharmonic viscosity. For CMIP5, this diagnostic was 3d, whereas the CMIP6 depth integrated diagnostic is sufficient for many purposes and reduces archive requirements.";W m-2
3;ocean;mlotstsq; ; ;mon;Square of Ocean Mixed Layer Thickness Defined by Sigma T;"The ocean mixed layer is the upper part of the ocean, regarded as being well-mixed.  The base of the mixed layer defined by temperature, sigma, sigma_theta or sigma_t is the level at which the quantity indicated differs from its surface value by a certain amount.  ""Thickness"" means the vertical extent of a layer.  ""square_of_X"" means X*X.";m2
3;ocean;sossq; ; ;mon;Square of Sea Surface Salinity;"The phrase ""square_of_X"" means X*X. Sea surface salinity is the salt concentration of sea water close to the sea surface, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. 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"" or one of the more precisely defined salinities should be used with a vertical coordinate axis. There are standard names for the precisely defined salinity quantities: sea_water_knudsen_salinity, S_K (used for salinity observations between 1901 and 1966), sea_water_cox_salinity, S_C (used for salinity observations between 1967 and 1977), sea_water_practical_salinity, S_P (used for salinity observations from 1978 to the present day), sea_water_absolute_salinity, S_A, sea_water_preformed_salinity, S_*, and sea_water_reference_salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows: S_P = (S_K - 0.03) * (1.80655 / 1.805) and S_P = S_C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_water_salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_water_practical_salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. The unit ""parts per thousand"" was used for sea_water_knudsen_salinity and sea_water_cox_salinity.";1e-06
3;ocean;tnkebto; ;no;monC;Tendency of Ocean Eddy Kinetic Energy Content due to Bolus Transport;"Depth integrated impacts on kinetic energy arising from parameterized eddy-induced advection. For CMIP5, this diagnostic was 3d, whereas the CMIP6 depth integrated diagnostic is sufficient for many purposes and reduces archive requirements.";W m-2
3;ocean;tnpeo; ;no;monC;tendency of ocean potential energy content;"Rate that work is done against vertical stratification, as measured by the vertical heat and salt diffusivity. Report here as depth integrated two-dimensional field.";W m-2
3;ocean;tnpeot; ;no;monC;Tendency of Ocean Potential Energy Content due to Tides;"""Content"" indicates a quantity per unit area.  Potential energy is the sum of the gravitational potential energy relative to the geoid and the centripetal potential energy. (The geopotential is the specific potential energy.)  ""Due to tides"" means due to all astronomical gravity changes which manifest as tides.  No distinction is made between different tidal components. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  ""tendency_of_X"" means derivative of X with respect to time.";W m-2
3;ocean;tnpeotb; ;no;monC;Tendency of Ocean Potential Energy Content due to Background;"""Content"" indicates a quantity per unit area.  Potential energy is the sum of the gravitational potential energy relative to the geoid and the centripetal potential energy. (The geopotential is the specific potential energy.)  ""Due to background"" means caused by a time invariant imposed field which may be either constant over the globe or spatially varying, depending on the ocean model used. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  ""tendency_of_X"" means derivative of X with respect to time.";W m-2
3;ocean;tossq; ;no;day,mon;Square of Sea Surface Temperature;"Square of temperature of liquid ocean.";degC2
3;ocean;zossq; ;no;mon;Square of Sea Surface Height Above Geoid;"Surface ocean geoid defines z=0.";m2
3;ocnBgChem;bfeos; ; ;mon;Surface Mole Concentration of Particulate Organic Matter expressed as Iron in Sea Water;"sum of particulate organic iron component concentrations";mol m-3
3;ocnBgChem;bsios; ; ;mon;Surface Mole Concentration of Particulate Organic Matter expressed as Silicon in Sea Water;"sum of particulate silica component concentrations";mol m-3
3;ocnBgChem;chlcalcos; ; ;mon;Surface Mass Concentration of Calcareous Phytoplankton expressed as Chlorophyll in Sea Water;"chlorophyll concentration from the calcite-producing phytoplankton component alone";kg m-3
3;ocnBgChem;chldiatos; ; ;mon;Surface Mass Concentration of Diatoms expressed as Chlorophyll in Sea Water;"chlorophyll from diatom phytoplankton component concentration alone";kg m-3
3;ocnBgChem;chldiazos; ; ;mon;Surface Mass Concentration of Diazotrophs expressed as Chlorophyll in Sea Water;"chlorophyll concentration from the diazotrophic phytoplankton component alone";kg m-3
3;ocnBgChem;chlmiscos; ; ;mon;Surface Mass Concentration of Other Phytoplankton expressed as Chlorophyll in Sea Water;"chlorophyll from additional phytoplankton component concentrations alone";kg m-3
3;ocnBgChem;chlpicoos; ; ;mon;Surface Mass Concentration of Picophytoplankton expressed as Chlorophyll in Sea Water;"chlorophyll concentration from the picophytoplankton (<2 um) component alone";kg m-3
3;ocnBgChem;dmsos; ; ;mon;Surface Mole Concentration of Dimethyl Sulphide in Sea Water;"'Mole concentration' means number of moles per unit volume, also called""molarity"", and is used in the construction mole_concentration_of_X_in_Y, whereX is a material constituent of Y.  A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for dimethyl sulfide is (CH3)2S.  Dimethyl sulfide is sometimes referred to as DMS.";mol m-3
3;ocnBgChem;phyfeos; ; ;mon;Surface Mole Concentration of Total Phytoplankton expressed as Iron in Sea Water;"sum of phytoplankton iron component concentrations";mol m-3
3;ocnBgChem;phynos; ; ;mon;Surface Mole Concentration of Phytoplankton Nitrogen in Sea Water;"sum of phytoplankton nitrogen component concentrations";mol m-3
3;ocnBgChem;phypos; ; ;mon;Surface Mole Concentration of Total Phytoplankton expressed as Phosphorus in Sea Water;"sum of phytoplankton phosphorus components";mol m-3
3;ocnBgChem;physios; ; ;mon;Surface Mole Concentration of Total Phytoplankton expressed as Silicon in Sea Water;"sum of phytoplankton silica component concentrations";mol m-3
3;ocnBgChem;ponos; ; ;mon;Surface Mole Concentration of Particulate Organic Matter expressed as Nitrogen in Sea Water;"sum of particulate organic nitrogen component concentrations";mol m-3
3;ocnBgChem;popos; ; ;mon;Surface Mole Concentration of Particulate Organic Matter expressed as Phosphorus in Sea Water;"sum of particulate organic phosphorus component concentrations";mol m-3
3;seaIce;sidragbot; ;no;mon;Ocean drag coefficient;"Oceanic drag coefficient that is used to calculate the oceanic momentum drag on sea ice";1
3;seaIce;sidragtop; ;no;mon;Atmospheric drag coefficient;"Atmospheric drag coefficient that is used to calculate the atmospheric momentum drag on sea ice";1
3;seaIce;siforcecoriolx; ;no;mon;Coriolis force term in force balance (x-component);"X-component of force on sea ice caused by coriolis force";N m-2
3;seaIce;siforcecorioly; ;no;mon;Coriolis force term in force balance (y-component);"Y-component of force on sea ice caused by coriolis force";N m-2
3;seaIce;siforceintstrx; ;no;mon;Internal stress term in force balance (x-component);"X-component of force on sea ice caused by internal stress (divergence of sigma)";N m-2
3;seaIce;siforceintstry; ;no;mon;Internal stress term in force balance (y-component);"Y-component of force on sea ice caused by internal stress (divergence of sigma)";N m-2
3;seaIce;siforcetiltx; ;no;mon;Sea-surface tilt term in force balance (x-component);"X-component of force on sea ice caused by sea-surface tilt";N m-2
3;seaIce;siforcetilty; ;no;mon;Sea-surface tilt term in force balance (y-component);"Y-component of force on sea ice caused by sea-surface tilt";N m-2
3;seaIce;siitdconc; ;no;mon;Sea-ice area fractions in thickness categories;"Area fraction of grid cell covered by each ice-thickness category (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of the categories as third coordinate axis)";%
3;seaIce;siitdsnconc; ;no;mon;Snow area fractions in thickness categories;"Area fraction of grid cell covered by snow in each ice-thickness category (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of the categories as third coordinate axis)";%
3;seaIce;siitdsnthick; ;no;mon;Snow thickness in thickness categories;"Actual thickness of snow in each  category (NOT volume divided by grid area),  (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of categories as third coordinate axis)";m
3;seaIce;siitdthick; ;no;mon;Sea-ice thickness in thickness categories;"Actual (floe) thickness of sea ice in each  category (NOT volume divided by grid area),  (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of categories as third coordinate axis)";m
3;seaIce;simpconc; ;no;mon;Percentage Cover of Sea-Ice by Meltpond;"Fraction of sea ice, by area, which is covered by melt ponds, giving equal weight to every square metre of sea ice .";%
3;seaIce;simpmass; ;no;mon;Meltpond Mass per Unit Area;"Meltpond mass per area of sea ice.";kg m-2
3;seaIce;simprefrozen; ;no;mon;Thickness of Refrozen Ice on Melt Pond;"Volume of refrozen ice on melt ponds divided by meltpond covered area";m
3;seaIce;sirdgconc; ;no;mon;Percentage Cover of Sea-Ice by Ridging;"Fraction of sea ice, by area, which is covered by sea ice ridges, giving equal weight to every square metre of sea ice .";1
3;seaIce;sirdgthick; ;no;mon;Ridged ice thickness;"Sea Ice Ridge Height (representing mean height over the ridged area)";m
3;seaIce;sisali; ;no;mon;Sea ice salinity;"Mean sea-ice salinity of all sea ice in grid cell";0.001
3;seaIce;sisaltmass; ;no;mon;Mass of salt in sea ice per area;"Total mass of all salt in sea ice divided by grid-cell area";kg m-2
3;seaIce;sistremax; ;no;monPt;Maximum shear stress in sea ice;"Maximum shear stress in sea ice (second stress invariant)";N m-1
3;seaIce;sistresave; ;no;monPt;Average normal stress in sea ice;"Average normal stress in sea ice (first stress invariant)";N m-1