GRIB-API definition
| Name | Surface thermal radiation downwards | Abbreviation | strd | Unit | J m-2 | paramId: | 175 |
UERRA details
| Definition | Downwards thermal (long wave) radiation at the surface. |
| Validity | accumulated (from the beginning of the forecast) |
WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 0 | meteorological products |
| Parameter category | 5 | long-wave radiation |
| Parameter number | 3 | downward long-wave radiation flux |
| Type of statistical processing | 1 | accumulated |
| 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 |