...
| Definition | It is meant to be used together with the type of level "soil level" to encode the depth of the level at each grid point. |
| Validity | instantaneous |
| Comment | Positive downward. Soil levels 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 | 3 | soil products |
| Parameter number | 27 | soil depth** |
| Level | ||
|---|---|---|
| Type of first fixed surface | 151 | soil level** |
| Scale factor of first fixed surface | 0 | |
| Scaled value of first fixed surface | 1/2/3/ | |
| .../X | n |
| for the nth soil level | ||
| Type of second fixed surface | all bits to 1 | missing |
| Scale factor of second fixed surface | all bits to 1 | missing |
| Scaled value of second fixed surface | all bits to 1 | missing |
**newly approved by WMO (release in May 2016)