ecCodes definition
| Name: | Sunshine duration | Abbreviation: | sund | Unit: | s | paramId: | 189 |
TIGGE details
| Definition | The solar duration is the length of time in which the solar radiation falling on a plane perpendicular to the direction of the Sun is greater or equal to 120 W/m2. |
| Validity | Accumulated from the beginning of the forecast |
| Comment | The field will be archived at forecast step 0, with all data values set to zero. |
WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 0 | Meteorological products |
| Parameter Category | 6 | Cloud |
| Parameter Number | 24 | Sunshine duration |
| 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 |