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Name: | Relative humidity | Abbreviation: | r | Unit: | % | paramId: | 157 |
UERRA details
DefinitionThe | ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at the same temperature on a pressure levelRelative humidity is defined with respect to saturation of the mixed phase, i.e. with respect to saturation over ice below -23C and with respect to saturation over water above 0C. In the regime in between a quadratic interpolation is applied. |
Validity | instantaneous |
Comment |
WMO GRIB2 definition
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Level | ||
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Type of first fixed surface | 100100 | pressure level |
Scale factor of first fixed surface | 0 | |
Scaled value of first fixed surface | value in Pa | |
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 |