Name:soil_temperatureAbbreviation:stUnit:K
DefinitionThe average soil temperature on the top 20cm of the soil layer.
Validityinstantaneous
Comment 
GRIB 2
Discipline= 2  
Parameter Category= 0  
Parameter Number= 2  
Type of first fixed surface= 106Type of second fixed surface= 106
Scale factor of first fixed surface= 0Scale factor of second fixed surface= 1
Scaled value of first fixed surface= 0Scaled value of second fixed surface= 2

 

Comments

AuthorContents
Jörg UrbanECMWFs 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.