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GRIB-API definition

Name
:surface_air_minimum_temperature
Minimum temperature at 2 metresAbbreviation
:
mn2t6
mn2tuUnit
:
KparamId202

 

UERRA details

ValidityMinimum determined over the last 6 hoursCommentThe field will NOT be archived at forecast step 0. It will be archived 4 times a day at 00, 06, 12 and 18Z.
Definition
The minimum temperature near the surface determined over the last six hours.
Minimum temperature at 2 metres since previous post-processing
Validityminimum since the previous post-processing
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

Parameter
Discipline
= 
0
Meteorological
meteorological products
Parameter
Category
category
= 
0
 Temperature
temperature
Parameter
Number
number
= 
0
Temperature
temperature
Type of statistical processing
=
3
Minimum
minimum
Type of statistical processing= 3minimum
Length of time rangepost-processing step in hours1/3/6
Level
Type of first fixed surface
=
103
 Specified
specified height level above ground m
Scale factor of first fixed surface
=
0
 
or 1***(m) or (dm***)
Scaled value of first fixed surface
=
2
2 metres (might vary from one centre to another)
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