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GRIB-API definition

name
:
specific_
2 metre relative humidityAbbreviation
:
q
2rUnit%paramId:
kg kg-1
260242

 

UERRA details

DefinitionThe
mass of water vapor per unit mass of air, including the water vapor
ratio of the partial pressure of water vapour to the equilibrium vapour pressure of water at the same temperature near the surface.
Validity
Instantaneous

instantaneous

Comment
 Archived once a day at 00Z
Please note that the specific height level above ground might vary from one Centre to another.

 

WMO GRIB2 definition

Parameter
Discipline
=
0
Meteorological
meteorological products
Parameter Category
=
1
Moisture
moisture
Parameter Number
= 0
1
Specific
relative humidity
Level
Type of first fixed surface
= 100 Isobaric surface Pa
103specified height level above ground (m)
Scale factor of first fixed surface
=
0
 
or 1***(m) or (dm***)
Scaled value of first fixed surface
= value in Pa Value of the field in Pascal
2 or 15***2 / 1.5 m
Type of second fixed surface
=
all bits to 1
Missing
missing
Scale factor of second fixed surface
=
all bits to 1
Missing
missing
Scaled value of second fixed surface
=
all bits to 1
Missing
missing

*** option valid for MetOffice