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(1) GRIB data streams could contain those variables as a composite field with parameter ID=139
Daily instantaneous data
GRIB | netCDF | ||||||
time step | name | parameter ID | units | CF standard name | canonical units | ||
24h | Sea-ice cover | 31 | (0-1) | sea_ice_area_fraction | 1 | ||
24h | Volumetric soil water layer 1 (2) | 39 | m3 m-3 | moisture_content_of_soil_layer (2) | kg m-2 | ||
24h | Volumetric soil water layer 2 (2) | 40 | m3 m-3 | ||||
24h | Volumetric soil water layer 3 (2) | 41 | m3 m-3 | ||||
24h | Volumetric soil water layer 4 (2) | 42 | m3 m-3 | ||||
24h | Snow depth | 141 | m of water equivalent | lwe_thickness_of_surface_snow_amount | m | ||
24h | Snow density | 33 | kg m-3 | snow_density | kg m-3 | ||
| 24h | Total column water vapour | (3)137 | kg m-2 | atmosphere_mass_content_of_water_vapor | (3)kg m-2 | ||
| 24h | Total column cloud liquid water (3) | 78 | kg m-2 | atmosphere_mass_content_of_cloud_liquid_water (3) | kg m-2 | ||
| 24h | Total column cloud ice water | (3)79 | kg m-2 | atmosphere_mass_content_of_cloud_ice | (3)kg m-2 | ||
(2) soil water content should be provided for all native model levels (so 39-42 GRIB parameter IDs just apply to ECMWF/IFS soil model)
(3) some details about these total column water quantities is still under discussion, specifically the convenience for time-aggregation (averaging) and some encoding details.
Daily time-aggregated data (accumulations, max/min,etc)
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