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| Definition | The average soil temperature on the top 20cm of the soil layer. |
| Validity | Daily meanaveraged |
| Comment | Computed from instantaneous values at 00, 06, 12 and 18Z |
| Parameter | |||
|---|---|---|---|
| Discipline | = 2 | Land surface products | |
| Parameter Category | = 0 | Vegetation/biomass | |
| Parameter Number | = 2 | Soil temperature | |
| Level | |||||||
|---|---|---|---|---|---|---|---|
| Type of first fixed surface | = 106 | Specified height level above ground m | |||||
| Scale factor of first Type of second fixed surface | = 1060 | ||||||
| Scaled value Scale factor of first fixed surface | = 0Scale factor | 0 | |||||
| Type of second fixed surface | = 106 | Missing | |||||
| Scale factor of second | 1Scaled value of firstfixed surface | = | 01 | ||||
| Scaled value of second fixed surface | = 2 | ||||||
| GRIB 2 and C-code for: Perturbed forecast, Control forecast, Perturbed re-forecast and Control re-forecast | |||||||
| 0.2 metre |
Comment:
Comments
| Author | Contents | |
|---|---|---|
| Jörg Urban | 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. |   |