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 |