GRIB-API definition
Name | percolation | Abbreviation | perc | Unit | kg m-2 | paramId: | 260430 |
UERRA details
Definition |
The percolation is the downward movement of water under hydrostatic pressure in the saturated zone. This water might still end up in rivers and lakes as discharge but it is a slower process than water runoff or drainage. Such defined percolation is an input for hydrological models together with e.g. water runoff. | |
Validity | accumulated (from the beginning of the forecast) |
Comment |
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WMO GRIB2 definition
Parameter | ||
---|---|---|
Discipline | 1 | hydrological products |
Parameter category | 0 | hydrology basic products |
Parameter number | 16 | percolation rate** |
Type of statistical processing | 1 | accumulated |
**newly approved by WMO (release in May 2016)
Level | ||
---|---|---|
Type of first fixed surface | 177 | Deep soil (of indefinite depth) |
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 |