Land Surface Variables

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	-

Further reading...

For more detailed information about the surface model, please see Chapter 8 in the IFS technical manual Part IV: Physical processes.

The technical manuals for IFS cycles can be found here:

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