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to-be-defined as 2m relative or specific humidity WMO like definition doesn't seem to exist yet.
"Surface air specific humidity" could look like below
name: | specific_relative humidity | Abbreviation: | qrh | Unit: | kg kg-1% |
Definition | The mass ratio of the partial pressure of water vapor per unit mass of air, including the water vapor near the surfaceto the equilibrium vapor pressure of water at the same temperature. |
Validity | Instantaneousinstantaneous |
Comment | Please note that the specific height level above ground might vary from one Centre to another. The scaled value of first fixed surface given below is the one in usage at ECMWF. |
Parameter |
---|
Discipline | = 0 | Meteorological meteorological products |
Parameter Category | = 1 | Moisturemoisture |
Parameter Number | 1= 0
| Specific relative humidity
|
Level |
---|
Type of first fixed surface | = 103 | Specified specified height level above ground m |
Scale factor of first fixed surface | = 0 | |
Scaled value of first fixed surface | = 2 | 2 metres 2m (might vary from one centre to another) |
Type of second fixed surface | = all bits to 1 | missingMissing
|
Scale factor of second fixed surface | = all bits to 1 | Missingmissing |
Scaled value of second fixed surface | = all bits to 1 | Missingmissing |