6-Hour Forecast Surface Variables
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Temperature (2-m)
Specific humidity (2-m)
U-wind (10-m)
V-wind (10-m)
Surface pressure
Soil moisture (0-10; 10-40; 40-100; 100-200)
Soil Temperature (0-10; 10-40; 40-100; 100-200)
Sea-ice flag
Land-sea flag
Soil height
Skin temperature
Water equivalent snow depth

Analysis Pressure Variables
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Temperature
U-wind
V-wind
Relative humidity
Geopotential height
Sea-level pressure (surface)

3-Hour Forecast Flux Variables
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Downward longwave radiation flux (surface)
Downward shortwave radiation flux (surface)
Frictional velocity (surface)
Ground heat flux (surface)
Latent heat flux (surface)
Sensible heat flux (surface)
Upward longwave radiation flux (surface)
Upward shortwave radiation flux (surface)

3-Hour Average (initial+0 to initial+3) Flux Variables
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Albedo (surface)
Clear sky downward longwave flux (surface)
Clear sky downward solar flux (surface)
Clear sky upward longwave flux (surface & TOA)
Clear sky upward solar flux (surface & TOA)
Downward shortwave radiation flux (surface & TOA)
Upward longwave radiation flux (surface & TOA)
Downward longwave radiation flux (surface)
Upward shortwave radiation flux (surface & TOA)
Ground heat flux (surface)
Latent heat flux (surface)
Sensible heat flux (surface)

3-Hour Accumulation (initial+0 to initial+3) Precipitation Variables
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Convective precipitation
Large scale precipitation (non-convective)
Total precipitation