Priority;Component;CMIP name;NorESM name or implementation status;CMOR implementation status;Frequencies;Long name;"Description";Units
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;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;cli;CLDICE;yes;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;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;clw;CLDLIQ;yes;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;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;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;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;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;RHREFHT;yes;6hr,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;hurs;RHREFHT;yes;6hr,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;QREFHT;yes;3hrPt,6hrPt,day,mon;Near-Surface Specific Humidity;"Near-surface (usually, 2 meter) specific humidity.";1
1;atmos;huss;QREFHT;yes;3hrPt,day,mon;Near-Surface Specific Humidity;"Near-surface (usually, 2 meter) specific humidity.";1
1;atmos;mc;CMFMC+CMFMCDZM;yes;mon;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;pfull;PS;no;monC;Pressure on Model Levels;"Air pressure on model levels";Pa
1;atmos;phalf;PS;no;monC;Pressure on Model Half-Levels;"Air pressure on model half-levels";Pa
1;atmos;pr;PRECT;yes;3hr,day,mon;Precipitation;"includes both liquid and solid phases";kg m-2 s-1
1;atmos;prc;PRECC;yes;3hr,day,mon;Convective Precipitation;"Convective precipitation at surface; includes both liquid and solid phases.";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;mon;Water Vapor Path;"vertically integrated through the atmospheric column";kg m-2
1;atmos;ps;PS;no;3hrPt,6hr,6hrPt,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;yes;6hr,day,mon;Sea Level Pressure;"Sea Level Pressure";Pa
1;atmos;rlds;FLDSC;no;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,mon;Surface Downwelling Clear-Sky Longwave Radiation;"Surface downwelling clear-sky longwave radiation";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;day,mon;TOA Outgoing Longwave Radiation;"at the top of the atmosphere (to be compared with satellite measurements)";W m-2
1;atmos;rlutcs;FLUTC?;yes;mon;TOA Outgoing Clear-sky Longwave Radiation;"Upwelling clear-sky longwave radiation at top of atmosphere";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,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;mon;TOA Incident Shortwave Radiation;"Shortwave radiation incident at the top of the atmosphere";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,mon;Surface Upwelling Clear-Sky Shortwave Radiation;"Surface Upwelling Clear-sky Shortwave Radiation";W m-2
1;atmos;rsut;FSUTOA;yes;mon;Top-of-Atmosphere Outgoing Shortwave Radiation;"at the top of the atmosphere";W m-2
1;atmos;rsutcs;SOLIN-FSNTOAC;yes;mon;TOA Outgoing Clear-Sky Shortwave Radiation;"Calculated in the absence of clouds.";W m-2
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;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;TREFHT;yes;3hrPt,6hrPt,day,mon;Near-Surface Air Temperature;"near-surface (usually, 2 meter) air temperature";K
1;atmos;tas;TREFHT;yes;3hrPt,day,mon;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;mon;Surface Downward Eastward Wind Stress;"Downward eastward wind stress at the surface";Pa
1;atmos;tauv;TAUY;yes;mon;Surface Downward Northward Wind Stress;"Downward northward wind stress at the surface";Pa
1;atmos;ts;TS;yes;mon;Surface Temperature;"Temperature of the lower boundary of the atmosphere";K
1;atmos;ua;U;no;3hrPt,6hrPt,day,mon;Eastward Near-Surface Wind;"Eastward component of the near-surface (usually, 10 meters)  wind";m s-1
1;atmos;uas; ;no;3hrPt,day,mon;Eastward Near-Surface Wind;"Eastward component of the near-surface (usually, 10 meters)  wind";m s-1
1;atmos;va;V;no;3hrPt,6hrPt,day,mon;Northward Near-Surface Wind;"Northward component of the near surface wind";m s-1
1;atmos;vas; ;no;3hrPt,day,mon;Northward Near-Surface Wind;"Northward component of the near surface wind";m s-1
1;atmos;wap;OMEGA;yes;day,mon;omega (=dp/dt);"Omega (vertical velocity in pressure coordinates, positive downwards)";Pa s-1
1;atmos;zg;Z3;yes;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;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;no;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;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;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;SOILWATER_10CM;yes;3hrPt,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;mrsol; ;no;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,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;QVEGT;no;mon;Transpiration;"Transpiration (may include dew formation as a negative flux).";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;QVEGE;partly;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; ; ;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;tsl;TS;yes;3hrPt,6hr,day,mon;Surface Temperature where Land or Sea Ice;"Surface temperature of all surfaces except open ocean.";K
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 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
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; ; ;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; ; ;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 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
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;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;msftbarot; ; ;mon;Ocean Barotropic Mass Streamfunction;"Streamfunction or its approximation for free surface models. See OMDP document for details.";kg s-1
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;so;dp;no;mon,monC;ocean vertical salt diffusivity;"Vertical/dianeutral diffusivity applied to prognostic salinity field.";m2 s-1
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;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;tos;SST (not written if coupling frequency is daily i.e. if no diurnal cycle);yes;3hrPt,mon;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; ;no;mon,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
1;ocean;vo;dz;yes;mon;Sea Water Volume;"Total volume of liquid sea water.";m3
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;zfullo;dz;partly;monC;Depth Below Geoid of Ocean Layer;"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;chl; ; ;yr;Total Chlorophyll Mass Concentration;"Sum of chlorophyll from all phytoplankton group concentrations.  In most models this is equal to chldiat+chlmisc, that is the sum of Diatom Chlorophyll Mass Concentration and Other Phytoplankton Chlorophyll Mass Concentration";kg m-3
1;ocnBgChem;dfe; ; ;yr;Dissolved Iron Concentration;"Dissolved iron in sea water,  including both Fe2+ and Fe3+ ions (but not particulate detrital iron)";mol m-3
1;ocnBgChem;no3; ; ;yr;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;o2; ; ;yr;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;si; ; ;yr;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
2;aerosol;bldep; ;no;6hr;Boundary Layer Depth;"Boundary layer depth";m
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;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;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;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;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;bfe; ; ;yr;Particulate Biogenic Iron Concentration;"Sum of particulate organic iron component concentrations";mol m-3
2;ocnBgChem;bsi; ; ;yr;Particulate Biogenic Silica Concentration;"Sum of particulate silica component concentrations";mol m-3
2;ocnBgChem;chlcalc; ; ;yr;Mass Concentration of Calcareous Phytoplankton expressed as Chlorophyll in Sea Water;"chlorophyll concentration from the calcite-producing phytoplankton component alone";kg m-3
2;ocnBgChem;chldiat; ; ;yr;Diatom Chlorophyll Mass Concentration;"Chlorophyll from diatom phytoplankton component concentration alone";kg m-3
2;ocnBgChem;chldiaz; ; ;yr;Mass Concentration of Diazotrophs expressed as Chlorophyll in Sea Water;"Chlorophyll concentration from the diazotrophic phytoplankton component alone";kg m-3
2;ocnBgChem;chlmisc; ; ;yr;Other Phytoplankton Chlorophyll Mass Concentration;"Chlorophyll from additional phytoplankton component concentrations alone";kg m-3
2;ocnBgChem;chlpico; ; ;yr;Mass Concentration of Picophytoplankton expressed as Chlorophyll in Sea Water;"chlorophyll concentration from the picophytoplankton (<2 um) component alone";kg m-3
2;ocnBgChem;darag; ; ;yr;Aragonite Dissolution;"Rate of change of Aragonite carbon mole concentration  due to dissolution";mol m-3 s-1
2;ocnBgChem;dcalc; ; ;yr;Calcite Dissolution;"Rate of change of Calcite carbon mole concentration  due to dissolution";mol m-3 s-1
2;ocnBgChem;dmso; ; ;yr;Dimethyl Sulphide Concentration;"Mole concentration of dimethyl sulphide in water";mol m-3
2;ocnBgChem;exparag; ; ;yr;Downward Flux of Aragonite;"Downward flux of Aragonite";mol m-2 s-1
2;ocnBgChem;expc; ; ;yr;Downward Flux of Particulate Organic Carbon;"Downward flux of particulate organic carbon";mol m-2 s-1
2;ocnBgChem;expcalc; ; ;yr;Downward Flux of Calcite;"Downward flux of Calcite";mol m-2 s-1
2;ocnBgChem;expn; ; ;yr;Sinking Particulate Organic Nitrogen Flux;"In accordance with common usage in geophysical disciplines, ""flux"" implies per unit area, called ""flux density"" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid.";mol m-2 s-1
2;ocnBgChem;expp; ; ;yr;Sinking Particulate Organic Phosphorus Flux;"In accordance with common usage in geophysical disciplines, ""flux"" implies per unit area, called ""flux density"" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid.";mol m-2 s-1
2;ocnBgChem;expsi; ; ;yr;Sinking Particulate Silica Flux;"In accordance with common usage in geophysical disciplines, ""flux"" implies per unit area, called ""flux density"" in physics.   'Sinking' is the gravitational settling of particulate matter suspended in a liquid. A sinking flux is positive downwards and is calculated relative to the movement of the surrounding fluid.";mol m-2 s-1
2;ocnBgChem;parag; ; ;yr;Aragonite Production;"'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 phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  ""tendency_of_X"" means derivative of X with respect to time.  Aragonite is a mineral that is a polymorph of calcium carbonate. The chemical formula of aragonite is CaCO3. Standard names also exist for calcite, another polymorph of calcium carbonate.";mol m-3 s-1
2;ocnBgChem;pbfe; ; ;yr;Biogenic Iron Production;"'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 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.";mol m-3 s-1
2;ocnBgChem;pbsi; ; ;yr;Biogenic Silica Production;"'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 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.";mol m-3 s-1
2;ocnBgChem;pcalc; ; ;yr;Calcite Production;"'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 phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase due_to_process means that the quantity named is a  single term in a sum of terms which together compose the general quantity  named by omitting the phrase.  ""tendency_of_X"" means derivative of X with respect to time.  Calcite is a mineral that is a polymorph of calcium carbonate. Thechemical formula of calcite is CaCO3. Standard names also exist for aragonite, another polymorph of calcium carbonate.";mol m-3 s-1
2;ocnBgChem;phyc; ; ;yr;Phytoplankton Carbon Concentration;"sum of phytoplankton carbon component concentrations.  In most (all?) cases this is the sum of phycdiat and phycmisc (i.e., ""Diatom Carbon Concentration"" and ""Non-Diatom Phytoplankton Carbon Concentration""";mol m-3
2;ocnBgChem;phyfe; ; ;yr;Phytoplankton Iron Concentration;"sum of phytoplankton iron component concentrations";mol m-3
2;ocnBgChem;phyn; ; ;yr;Phytoplankton Nitrogen Concentration;"sum of phytoplankton nitrogen component concentrations";mol m-3
2;ocnBgChem;phyp; ; ;yr;Phytoplankton Phosphorus Concentration;"sum of phytoplankton phosphorus components";mol m-3
2;ocnBgChem;physi; ; ;yr;Phytoplankton Silica Concentration;"sum of phytoplankton silica component concentrations";mol m-3
2;ocnBgChem;pnitrate; ; ;yr;Primary Carbon Production by Phytoplankton due to Nitrate Uptake Alone;"Primary (organic carbon) production by phytoplankton due to nitrate uptake alone";mol m-3 s-1
2;ocnBgChem;pon; ; ;yr;Particulate Organic Nitrogen Concentration;"sum of particulate organic nitrogen component concentrations";mol m-3
2;ocnBgChem;pop; ; ;yr;Particulate Organic Phosphorus Concentration;"sum of particulate organic phosphorus component concentrations";mol m-3
2;ocnBgChem;pp; ; ;yr;Primary Carbon Production by Phytoplankton;"total primary (organic carbon) production by phytoplankton";mol m-3 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;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;rv850; ;no;6hr;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
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;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;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;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;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;bddtalk; ; ;yr;Rate of Change of Alkalinity due to Biological Activity;"Net total of biological terms in time rate of change of alkalinity";mol m-3 s-1
3;ocnBgChem;bddtdic; ; ;yr;Rate of Change of Dissolved Inorganic Carbon due to Biological Activity;"Net total of biological terms in time rate of change of dissolved inorganic carbon";mol m-3 s-1
3;ocnBgChem;bddtdife; ; ;yr;Rate of Change of Dissolved Inorganic Iron due to Biological Activity;"Net total of biological terms in time rate of change of dissolved inorganic iron";mol m-3 s-1
3;ocnBgChem;bddtdin; ; ;yr;Rate of Change of Nitrogen Nutrient due to Biological Activity;"Net total of biological terms in time rate of change of nitrogen nutrients (e.g. NO3+NH4)";mol m-3 s-1
3;ocnBgChem;bddtdip; ; ;yr;Rate of Change of Dissolved Phosphorus due to Biological Activity;"Net of biological terms in time rate of change of dissolved phosphate";mol m-3 s-1
3;ocnBgChem;bddtdisi; ; ;yr;Rate of Change of Dissolved Inorganic silicon due to Biological Activity;"Net of biological terms in time rate of change of dissolved inorganic silicon";mol m-3 s-1
3;ocnBgChem;fescav; ; ;yr;Nonbiogenic Iron Scavenging;"Dissolved Fe removed through nonbiogenic scavenging onto particles";mol m-3 s-1
3;ocnBgChem;graz; ; ;yr;Total Grazing of Phytoplankton by Zooplankton;"""tendency_of_X"" means derivative of X with respect to time. 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 phrase ""expressed_as"" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. The specification of a physical process by the phrase ""due_to_"" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. Phytoplankton are autotrophic prokaryotic or eukaryotic algae that live near the water surface where there is sufficient light to support photosynthesis. ""Grazing of phytoplankton"" means the grazing of phytoplankton by zooplankton.";mol m-3 s-1