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Name:soil_temperatureAbbreviation:stUnit:K

Soil temperature top 100 cm

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Name:soil_temperature top 100 cmAbbreviation:st200st100Unit: K
DefinitionThe average soil temperature on the top 100cm of the soil layer.
ValidityinstantaneousDaily averaged
Comment Computed from instantaneous values at 00, 06, 12 and 18Z - Sea points should be set as missing values.
GRIB 2
Parameter
Discipline= 2  Land surface products 
Parameter Category= 0  Vegetation/biomass
Parameter Number= 2  Soil temperature
 
1
Level
Type of first fixed surface= 106Type of second fixed surface= 106 Depth below land surface m
Scale factor of first fixed surface= 0Scale factor of second fixed surface= 2 
Scaled value of first fixed surface= 00Scaled value
Type of second fixed surface=
GRIB 2 and C-code for: Deterministic forecast, Perturbed forecast and Control forecast

 

Comments

ECMWFs has four soil layers: layer 1 from 0cm to 7cm, layer 2 from 7cm to 28cm, layer 3 from 28cm to 1m and layer 4 from 1m to 2.89m. The parameter soil temperature is then computed:
st = ( 7 * T_1 + 13 * T_2 )/20,
where T_i are the averaged soil temperatures on the i-th level.Image Removed Image Removed
106
Depth below land surface m
Scale factor of second fixed surface= 1
 
Scaled value of second fixed surface= 10
1 metre
AuthorContents 
Jörg Urban