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(1) GRIB data streams could contain those variables as a composite field with parameter ID=139

Daily instantaneous data
(3) (3) (3) (3)


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

24hTotal column water vapour137kg m-2atmosphere_mass_content_of_water_vaporkg m-2
24hTotal column cloud liquid water (3)78kg m-2atmosphere_mass_content_of_cloud_liquid_water (3)kg m-2
24hTotal column cloud ice water79kg m-2atmosphere_mass_content_of_cloud_icekg 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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