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At present the surface scheme prognostic or boundary conditions variables that are updated along forecasts are summarized in the following table:
| Variable | Grib code.table | Description | Units |
|---|---|---|---|
| STL1,2,3,4 | 139.128, 170,128, 183.128, 236.128 | Soil Temperature | K |
| SWVL1,2,3,4 | 39.128, 40,128, 41.128, 42.128 | Soil Moisture | - |
| SRC | 198.128 | Skin reservoir content | m |
| SKT | 235.128 | Skin temperature | K |
| SD | 141.128 | Snow Depth (water eq.) | m |
| TSN | 238.128 | Snow Temperature | K |
| ASN | 32.128 | Snow Albedo | - |
| RSN | 33.128 | Snow Density | kg/m3 |
| ISTL1,2,3,4 | 35.128, 36.128 37.128, 38.128 | Ice Temperature | K |
| LMLT | 8.228 | Lake Mix-Layer Temperature | K |
| LBLT | 10.228 | Lake Bottom Layer Temperature | K |
| LICT | 13.228 | Lake Ice Temperature | K |
| LTLT | 11.228 | Lake Total Layer Temperature | K |
| LMLD | 9.228 | Lake Mix-Layer Depth | m |
| LICD | 14.228 | Lake Ice Depth | m |
| LSHF | 12.228 | Lake Shape Factor | - |
| SST | 34.128 | Sea-Surface Temperature | K |
| CI | 31.128 | Ice Cover | - |
| LAI_LV | 66.128 | Leaf Area Index Low Vegetation | - |
| LAI_LH | 67.128 | Leaf Area Index High Vegetation | - |
| ALUVP | 15.128 | UV/Vis Albedo Direct Radiation | - |
| ALUVD | 16.128 | UV/Vis Albedo Diffuse Radiation | - |
| ALNIP | 17.128 | NIR Albedo Direct Radiation | - |
| ALNID | 18.128 | NIR Albedo Diffuse Radiation | - |