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Table 1: Overview of variables calculated as a mean value of a grib box.
Name | ShortName | Unit | GRIB2 CODE | Analysis | Forecast range | Height |
Albedo | al | % | 260509 | no | yes | surface |
Evaporation | eva | kg m-2 | 260259 | no | yes | surface |
Total precipitation | tp | kg m-2 | 228228 | yes | no | surface |
Skin temperature | skt | K | 235 | no | yes | surface |
Surface latent heat flux | slhf | J m-2 | 147 | no | yes | surface |
Surface sensible heat flux | sshf | J m-2 | 146 | no | yes | surface |
Surface net solar radiation | ssr | J m-2 | 176 | no | yes | surface |
Surface solar radiation downwards | ssrd | J m-2 | 169 | no | yes | surface |
Surface net thermal radiation | str | J m-2 | 177 | no | yes | surface |
Surface thermal radiation downwards | strd | J m-2 | 175 | no | yes | surface |
Soil heat flux | sohf | W m-2 | 260364 | no | yes | surface |
Surface roughness | sr | m | 173 | no | yes | surface |
Albedo
The albedo [0-100%] is the total reflectance of downward solar radiation at the surface over the grid box. The albedo is the ratio of one hour time-integrated surface solar radiation upward by the one hour time-integrated surface solar radiation downward. Multiplying the albedo with the one hour accumulated downward solar radiation gives the one hour accumulated upward solar radiation.
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Table 2: Overview of variables available for the natural land fraction.
Name | ShortName | Unit | GRIB2 CODE | Analysis 0, 3 …, 21 (or daily) | Forecast range 1, 2, 3 | Height |
Fraction of snow cover (Instantaneous) | fscov | proportion | 260289 | no | yes | surface |
Snow depth (Instantaneous) | sde | m | 3066 | no | yes | surface |
Snow depth water equivalent (Instantaneous) | sd | kg m-2 | 228141 | no | yes | surface |
Snow density (Instantaneous) | rsn | kg m-3 | 33 | no | yes | surface |
Snow albedo (Instantaneous) | asn | % | 228032 | no | yes | surface |
Temperature of snow layer (Instantaneous) | tsn | K | 238 | no | yes | surface |
Snow melt (accumulated) | snom | kg m-2 | 3099 | no | yes | surface |
Percolation (accumulated) | perc | kg m-2 | 260430 | no | yes | surface |
Surface runoff (accumulated) | sro | kg m-2 | 174008 | no | yes | surface |
Soil temperature (Instantaneous) | sot | K | 260360 | no | yes | Soil (14 layers) |
Volumetric soil moisture (Instantaneous) | wsw | m3m-3 | 260199 | no | yes | Soil (14 layers) |
Liquid volumetric soil moisture (non-frozen) (Instantaneous) | liqvsm | m3m-3 | 260210 | no | yes | Soil (14 layers) |
Fraction of snow cover
It represents the fraction (0-1) occupied by snow for nature fraction only. It is an instantaneous variable.
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Table 3: Overview of variables available for the inland water fraction.
Name | ShortName | Unit | GRIB2 CODE | Analysis | Forecast range | Height |
Lake bottom temperature | lblt | K | 228010 | yes | no | surface |
Lake ice depth | licd | m | 228014 | no | yes | surface |
Lake ice temperature | lict | K | 228013 | no | yes | surface |
Lake mix-layer depth | lmld | m | 228009 | no | yes | surface |
Lake mix-layer temperature | lmlt | K | 228008 | no | yes | surface |
Lake shape factor | lshf | dimensionless | 228012 | no | yes | surface |
Lake total layer temperature | ltlt | K | 228011 | no | yes | surface |
Lake bottom temperature
Temperature of water at the bottom of inland water bodies (lakes). The model keeps lake depth and surface area (or fractional cover) constant in time. It is an instantaneous variable.
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names in the WMO GRIB2 code definitions and have not been uploaded to the CDS in the first batch of released data.
ShortName | Unit | GRIB2 CODE | Analysis 0, 3 …, 21 (or daily) | Forecast range 1, 2, 3 | Height | |
Lake depth | dl | m | 228007 | no | no | surface |
Volumetric wilting point | vwiltm | m3 m-3 | 260200 | no | no | Soil (14 layers) |
Volumetric transpiration stress-onset (soil moisture) | voltso | m3 m-3 | 260211 | no | no | Soil (14 layers) |
Land-sea mask | lsm | dimensionless | 172 | no | no | surface |
Orography | orog | m | 228002 | no | no | surface |
Inland water tile fraction* | TBD | dimensionless | TBD | no | no | surface |
Urban tile fraction* | TBD | dimensionless | TBD | no | no | surface |
Nature tile fraction* | TBD | dimensionless | TBD | no | no | surface |
Lake depth
Depth of inland water. It is defined for positive fractions only. It is a static field.
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