1

NetCDF

CC-BY-4.0: Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/

eng; USA

The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2

"specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1

The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa

A phrase assuming_condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2

The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K

sea_ice_area_fraction [CF-Standard Name]; unit: 0.01

Total Water Content of Soil Layer

Comment: in each soil layer, the mass of water in all phases, including ice. Reported as 'missing' for grid cells occupied entirely by 'sea'

Used for mip era 'CMIP6' in CMOR MIP table(s): Table 6hrPlevPt; Table Eday; Table Emon, provided in frequency(s): 6hr; day; mon, and for Realm(s): atmos; land.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2

The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa

Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa

sea_ice_thickness [CF-Standard Name]; unit: m

sea_water_salinity [CF-Standard Name]; unit: 0.001

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

The surface called "surface" means the lower boundary of the atmosphere. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level.[CF-Standard Name]; unit: m

sea-salt aerosol Mass Mixing Ratio

Comment: Mass fraction in the atmosphere of sea salt aerosol (dry mass).

Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg kg-1

relative_humidity [CF-Standard Name]; unit: 0.01

The unit of salinity is PSU, which is dimensionless. The units attribute should be given as 1e-3 or 0.001 i.e. parts per thousand if salinity is in PSU. Sea surface salinity is often abbreviated as "SSS". For the salinity of sea water at a particular depth or layer, a data variable of sea_water_salinity with a vertical coordinate axis should be used. [CF-Standard Name]; unit: 0.001

The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2

sea_water_ph_reported_on_total_scale [CF-Standard Name]; unit: 1

Ocean Grid-Cell Volume [CF-Standard Name]; unit: m3

Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity.[CF-Standard Name]; unit: m s-1

toa_outgoing_shortwave_flux_assuming_clear_sky [CF-Standard Name]; unit: W m-2

The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2

surface_downward_heat_flux_in_sea_water [CF-Standard Name]; unit: W m-2

Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: mol mol-1

surface_downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2

surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1

In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1

Ocean Mixed Layer Thickness Defined by Sigma T [CF-Standard Name]; unit: m

Total Soil Moisture Content

Comment: the mass per unit area (summed over all soil layers) of water in all phases.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table Lmon; Table day, provided in frequency(s): day; mon, and for Realm(s): atmos; land.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2

Model Grid-Cell Area [CF-Standard Name]; unit: m2

"longwave" means longwave radiation. "toa" means top of atmosphere. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2

"specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: 1

"shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA outgoing shortwave flux is the reflected and scattered solar radiative flux i.e. the "upwelling" TOA shortwave flux, sometimes called the "outgoing shortwave radiation" or "OSR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon [CF-Standard Name]; unit: kg m-2 s-1

Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. [CF-Standard Name]; unit: m

"Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1

surface_downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2

Aerosol Sulfate Mass Mixing Ratio

Comment: Dry mass of sulfate (SO4) in aerosol particles as a fraction of air mass.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg kg-1

The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2

"Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1

Elemental Carbon Mass Mixing Ratio

Comment: Dry mass fraction of black carbon aerosol particles in air.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg kg-1

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), and not the skin temperature, whose standard name is surface_temperature. For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used. [CF-Standard Name]; unit: degC

Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1

surface_snow_thickness [CF-Standard Name]; unit: m

In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: kg m-2 s-1

"Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1

The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. [CF-Standard Name]; unit: Pa

sea_water_potential_temperature [CF-Standard Name]; unit: degC

Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. [CF-Standard Name]; unit: mol mol-1

atmosphere_mass_content_of_water_vapor [CF-Standard Name]; unit: kg m-2

Total Carbon in All Terrestrial Carbon Pools

Comment: Report missing data over ocean grid cells. For fractional land report value averaged over the land fraction.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table Emon, provided in frequency(s): mon, and for Realm(s): land.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2

Snow Evaporation

Comment: Water here means water in all phases. Evaporation is the conversion of liquid or solid into vapor. (The conversion of solid alone into vapor is called 'sublimation'.) In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table Eday, provided in frequency(s): day, and for Realm(s): land.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg m-2 s-1

"shortwave" means shortwave radiation. "toa" means top of atmosphere. The TOA incoming shortwave flux is the radiative flux from the sun i.e. the "downwelling" TOA shortwave flux. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

"Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) [CF-Standard Name]; unit: m s-1

Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. [CF-Standard Name]; unit: Pa

Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity.[CF-Standard Name]; unit: m s-1

Total Organic Aerosol Mass Mixing Ratio

Comment: We recommend a scale factor of POM=1.4*OC, unless your model has more detailed info available.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg kg-1

surface_snow_amount [CF-Standard Name]; unit: kg m-2

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

"X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0.01

Dust Aerosol Mass Mixing Ratio

Comment: Dry mass fraction of dust aerosol particles in air.

Used for mip era 'CMIP6' in CMOR MIP table(s): Table AERmon, provided in frequency(s): mon, and for Realm(s): aerosol.

Codelist created on 2019-02-01 from https://github.com/PCMDI/cmip6-cmor-tables (CMOR Version=3.4; table_date(s):14 December 2018) [CF-Standard Name]; unit: kg kg-1

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

eng; USA

C6SPNGGFLs585

ISO 19115

ISO 19115-2:2009