GRIB-API definition
Surface clear-sky thermal radiation downwardsAccumulated downward long-wave radiation flux, clear sky | Abbreviation |
sctrdadlwrf_cs | Unit | J m-2 | paramId: |
TBD
UERRA details
Definition | Downward clear-sky thermal (long-wave) radiation at the surface (assuming transparent clouds). |
Validity | accumulated (from the beginning of the forecast) |
Comment | The flux sign convention is positive downwards. |
WMO GRIB2 definition
Parameter |
---|
Discipline | 0 | meteorological products |
Parameter category | 5 | long-wave radiation |
Parameter number | 8 | Downward long-wave radiation flux, clear sky** |
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 |
**newly approved by WMO (release in May 2016)