GRIB-API definition
name | 2 metre relative humidity | Abbreviation | 2r | Unit | % | paramId: | 260242 |
UERRA details
Image Removed
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_humidity | Abbreviation: | q | Unit: | kg kg-1 |
Definition | The mass of water vapor per unit mass of air, including the water vapor Definition | The ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at the same temperature |
near the surface. |
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.
WMO GRIB2 definition
= Meteorological meteorological products |
Parameter Category |
= Moisture= 0Specific Level |
---|
Type of first fixed surface |
= Specified specified height level above ground (m) |
Scale factor of first fixed surface |
= or 1*** | (m) or (dm***) |
Scaled value of first fixed surface |
= 2 metres (might vary from one centre to another)or 15*** | 2 / 1.5 m |
Type of second fixed surface |
= Missing missing
|
Scale factor of second fixed surface |
= Missingmissing |
Scaled value of second fixed surface |
= Missing*** option valid for MetOffice