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TIGGE > Parameters > Surface air dew point temperature >

Surface air dew point temperature

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Additional information

Name:

surface_air_dew_point_temperature

Abbreviation:

2d

Unit:

K

Definition	The temperature near the surface to which a given air parcel must be cooled at constant pressure and constant water vapor content in order for saturation to occur.
Validity	instantaneous
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.

GRIB 2

Discipline	= 0
Parameter Category	= 0
Parameter Number	= 6
Type of first fixed surface	= 103	Type of second fixed surface	= All 1's
Scale factor of first fixed surface	= 0	Scale factor of second fixed surface	= All 1's
Scaled value of first fixed surface	= 2	Scaled value of second fixed surface	= All 1's

GRIB 2 and C-code for: Deterministic forecast, Perturbed forecast and Control forecast

Comments

Author	Contents
Jörg Urban	Corresponds to the 2m dew point temperature at ECMWF.

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17-03-2010