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| MAIN VARIABLES | ||
|---|---|---|
| Name | Units | Description |
| 10m u component of wind | m s-1 | Magnitude of the eastward component of the two-dimensional horizontal air velocity near the surface. |
| 10m v component of wind | m s-1 | Magnitude of the northward component of the two-dimensional horizontal air velocity near the surface. |
| 10m wind_speed | m s-1 | Magnitude of the two-dimensional horizontal air velocity near thesurface. |
| 2m temperature | K | Temperature of the air near the surface. |
| Eastward turbulent surface stress | N s m-2 | Eastward component of the horizontal drag exerted by the atmosphere on the surface through turbulent processes. |
| Evaporation | kg m-2 s-1 | Evaporation rate. It includes conversion to vapor phase from both the liquid and solid phase, i.e., includes sublimation. |
| Maximum 2m temperature in the last 24 hours | K | Daily maximum near-surface air temperature. |
| Mean precipitation flux | kg m-2 s-1 | Amount of water per unit area and time. |
| Mean sea level pressure | Pa | Time average of the air pressure at sea level. |
| Minimum 2m temperature in the last 24 hours | K | Daily minimum near-surface air temperature. |
| Near surface relative humidity | % | Amount of moisture in the air near the surface divided by the maximum amount of moisture that could exist in the air at a specific temperature and location. |
| Near surface specific humidity | Dimensionless | Amount of moisture in the air near the surface divided by amount of air plus moist at that location. |
| Northward turbulent surface stress | N s m-2 | Northward component of the horizontal drag exerted by the atmosphere on the surface through turbulent processes. |
| Runoff | kg m-2 s-1 | Amount per unit area of surface and subsurface liquid water which drains from land. |
| Sea ice fraction | Dimensionless | Area of the sea surface occupied by sea ice. |
| Sea ice plus snow amount | kg m-2 | Mass per unit area of sea ice plus snow in the ocean portion of the grid cell averaged over the entire ocean portion, including the ice-free fraction. Reported as 0.0 in regions free of sea ice. |
| Sea ice surface temperature | K | Temperature that exists at the interface of tea sea-ice and the overlying medium which may be air or snow. |
| Sea ice thickness | m | Vertical extent of ocean sea ice. |
| Sea surface height above geoid | m | Vertical distance between the actual sea surface and a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. |
| Sea surface temperature | K | Temperature of sea water near the surface. |
| Skin temperature | K | Temperature at the interface (not the bulk temperature of the medium above or below) between air and sea for open-sea regions. |
| Snow depth over sea ice | K | Mean thickness of snow in the ocean portion of the grid cell (averaging over the entire ocean portion, including the snow-free ocean fraction). Reported as 0.0 in regions free of snow-covered sea ice. |
| Snowfall | kg m-2 s-1 | Mass of water in the form of snow precipitating per unit area. |
| Soil moisture content | kg m-2 | Vertical sum per unit area from the surface down to the bottom of the soil model of water in all phases contained in soil. |
| Surface latent heat flux | W m-2 | Flux per unit area of heat between the surface and the air on account of evaporation including sublimation. Positive when directed upward (negative downward). |
| Surface pressure | Pa | Pressure of air at the lower boundary of the atmopshere |
| Surface sensible heat flux | W m-2 | Flux per unit area of heat between the surface and the air by motion of air only. Positive when directed upward (negative downward). |
| Surface snow amount | kg m-2 | Snow amount on the ground, excluding that on the plant or vegetation canopy, per unit area. |
| Surface solar radiation downwards | W m-2 | Radiative shortwave flux of energy downward at the surface. |
| Surface thermal radiation downwards | W m-2 | Radiation inciding on the surface from the above per unit area. |
| Surface upwelling longwave radiation | W m-2 | Longwave radiation from the surface per unit area. |
| Surface upwelling shortwave radiation | W m-2 | Shortwave radiation from the surface per unit area. |
| TOA incident solar radiation | W m-2 | Incident solar radiation at the top of atmosphere |
| TOA outgoing clear-sky longwave radiation | W m-2 | Longwave radiation from the top of the atmosphere to space per unit area assuming clear-sky conditions |
| TOA outgoing clear-sky shortwave radiation | W m-2 | Shortwave radiation from the top of the atmosphere to space per unit area assuming clear-sky conditions |
| TOA outgoing longwave radiation | W m-2 | Longwave radiation from the top of the atmosphere to space per unit area. |
| TOA outgoing shortwave radiation | W m-2 | Shortwave radiation from the top of the atmosphere to space per unit area. |
| Total cloud cover | Dimensionless | Total refers to the whole atmosphere column, as seen from the surface or the top of the atmosphere. Cloud cover refers to fraction of horizontal area occupied by clouds. |
CDS parameter name | Variable id | Long name | Units |
2m temperature | tas | Near-Surface Air Temperature | Kelvin |
Maximum 2m temperature in the last 24 hours | tasmax | Daily Maximum Near-Surface Air Temperature | Kelvin |
Minimum 2m temperature in the last 24 hours | tasmin | Daily Minimum Near-Surface Air Temperature | Kelvin |
| Skin temperature | ts | Surface Temperature | Kelvin |
| Mean sea level pressure | psl | Sea Level Pressure | Pa |
| Surface pressure | ps | Surface Air Pressure | Pa |
| 10m u component of wind | uas | Eastward Near-Surface Wind | m s-1 |
| 10m v component of wind | vas | Northward Near-Surface Wind | m s-1 |
| 10m wind speed | sfcWind | Near-Surface Wind Speed | m s-1 |
| 2m relative humidity | hurs | Near-Surface Relative Humidity | 1 |
| 2m specific humidity | huss | Near-Surface Specific Humidity | 1 |
| Mean precipitation flux | pr | Precipitation | kg m-2 s-1 |
| Snowfall | prsn | Snowfall Flux | kg m-2 s-1 |
| Evaporation | evspsbl | Evaporation Including Sublimation and Transpiration | kg m-2 s-1 |
| Eastward turbulent surface stress | tauu | Surface Downward Eastward Wind Stress | Pa |
| Northward turbulent surface stress | tauv | Surface Downward Northward Wind Stress | Pa |
| Surface latent heat flux | hfls | Surface Upward Latent Heat Flux | W m-2 |
| Surface sensible heat flux | hfss | Surface Upward Sensible Heat Flux | W m-2 |
| Surface thermal radiation downwards | rlds | Surface Downwelling Longwave Radiation | W m-2 |
Surface upwelling longwave radiation | rlus | Surface Upwelling Longwave Radiation | W m-2 |
Surface solar radiation downwards | rsds | Surface Downwelling Shortwave Radiation | W m-2 |
Surface upwelling shortwave radiation | rsus | Surface Upwelling Shortwave Radiation | W m-2 |
TOA incident solar radiation | rsdt | TOA Incident Shortwave Radiation | W m-2 |
| TOA outgoing shortwave radiation | rsut | TOA Outgoing Shortwave Radiation | W m-2 |
| TOA outgoing longwave radiation | rlut | TOA Outgoing Longwave Radiation | W m-2 |
| Total cloud cover | clt | Total Cloud Cover Percentage | 1 |
| Air temperature | ta | Air Temperature | K |
| U-component of wind | ua | Eastward Wind | m s-1 |
| V-component of wind | va | Northward Wind | m s-1 |
| Relative humidity | hur | Relative Humidity | 1 |
| Specific humidity | hus | Specific Humidity | 1 |
| Geopotential height | zg | Geopotential Height | m |
| Surface snow amount | snw | Surface Snow Amount | kg m-2 |
| Snow depth | snd | Snow Depth | m |
| Runoff | mrro | Total Runoff | kg m-2 s-1 |
| Soil moisture content | mrsos | Moisture in Upper Portion of Soil Column | kg m-2 |
| Sea-ice area percentage | siconc | Sea-Ice Area Percentage (Ocean Grid) | 1 |
| Sea ice thickness | sithick | Sea Ice Thickness | m |
| Sea ice plus snow amount | simass | Sea-Ice Mass per Area | kg m-2 |
| Sea ice surface temperature | sitemptop | Surface Temperature of Sea Ice | K |
| Sea surface temperature | tos | Sea Surface Temperature | K |
| Sea surface salinity | sos | Sea Surface Salinity | 1e-3 |
| Sea surface height above geoid | zos | Sea Surface Height Above Geoid | m |
| Grid-cell area for ocean variables | areacello | Grid-Cell Area for Ocean Variables* | m2 |
| Sea area percentage | sftof | Sea Area Percentage* | % |
| Grid-cell area for atmospheric grid variables | areacella | Grid-Cell Area for Atmospheric Grid Variables* | m2 |
| Capacity of soil to store water (field capacity) | mrsofc | Capacity of Soil to Store Water (Field Capacity)* | kg m-2 |
| Percentage of grid cell occupied by land (including lakes) | sftlf | Percentage of the Grid Cell Occupied by Land (Including Lakes)* | % |
| Land ice area percentage | sftgif | Land Ice Area Percentage* | 1 |
| Orography | orog | Surface Altitude* | m |