| 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. |