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| Definition | Volumetric soil moisture of a soil layer. |
| Validity | instantaneous |
| Comment | Sea points should be set as missing values (encoded as bitmap). Soil layers must always start from 1 (0 soil level is the surface by default which is not encoded) |
WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 2 | land surface products |
| Parameter category | 0 | vegetation/biomass |
| Parameter number | 25 | volumetric soil moisture |
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| Level | ||
|---|---|---|
| Type of first fixed surface | 151 | soil level** |
| Scale factor of first fixed surface | 0 | |
| Scaled value of first fixed surface | 0/1/2/3/.../X-1 | n-1 for the nth soil layer |
| Type of second fixed surface | 151 | soil level* |
| Scale factor of second fixed surface | 0 | |
| Scaled value of second fixed surface | 1/2/3/.../X | n for the nth soil layer |
**newly approved level type (WMO release in May 2016)
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