GRIB-API definition
| Name | surface Surface roughness | Abbreviation | sr | Unit | m | paramId: | 173 |
UERRA details
| Definition | Aerodynamic roughness length (over land). |
| Validity | instantaneous |
| Comment | Archived once a day at 00Z for control forecast and re-forecast, only.only with.... |
WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 2 | land surface products |
| Parameter Categorycategory | 0 | vegetation/biomass |
| Parameter Numbernumber | 1 | surface roughness |
| Level | ||
|---|---|---|
| Type of first fixed surface | 1 | ground or water surface |
| Scale factor of first fixed surface | all bits to 1 | missing |
| Scaled value of first fixed surface | all bits to 1 | missing |
| 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 |