Surface air dew point temperature

 

Name:surface_air_dew_point_temperatureAbbreviation:2dUnit:K
DefinitionThe temperature near the surface to which a given air parcel must be cooled at constant pressure and constant water vapour content in order for saturation to occur.
ValidityDaily averaged
Comment

Computed from instantaneous values at 00, 06, 12 and 18Z.

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=  0Meteorological products
Parameter Category=  0 Temperature
Parameter Number=  6Dew-point temperature
Level
Type of first fixed surface= 103 Specified height level above ground m
Scale factor of first fixed surface= 0 
Scaled value of first fixed surface= 22 metres (might vary from one centre to another)
Type of second fixed surface= all bits to 1
Missing
Scale factor of second fixed surface= all bits to 1Missing
Scaled value of second fixed surface= all bits to 1Missing