Below is a list of all agreed upon parameters. Participating Centers are expected to produce output fields in GRIB2 data format and with consistent units. All units are defined by the WMO in the GRIB2 manual . For more information please refer to Guide to the WMO Table Driven Code Form.
- Rules for parameter exchanges and GRIB2 encoding can be found here.
- List of parameters provided by each partner for S2S archive is available here.
List of parameters
Table of Contents |
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Pressure level parameters
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Name | Abbreviation | Unit | Frequency |
10 metre u-velocity | 10u | m s-1 | Instantaneous once a day (00Z) |
10 metre v-velocity | 10v | m s-1 | Instantaneous once a day (00Z) |
CAPE | cape | J kg-1 | Daily averaged |
Skin temperature | skt | K | Daily averaged |
Snow depth water equivalent | sd | kg m-2 | Daily averaged |
Snow density | rsn | kg m-3 | Daily averaged |
Snow fall water equivalent | sf | kg m-2 | Accumulated, archived every 24 hours |
Snow albedo | asn | % | Daily averaged |
Soil moisture top 20cm | sm20 | kg m-3 | Daily averaged |
Soil moisture top 100 cm | sm100 | kg m-3 | Daily averaged |
Soil temperature top 20 cm | st20 | K | Daily averaged |
Soil temperature top 100 cm | st100 | K | Daily averaged |
Surface air maximum temperature | mx2t6 | K | 6-hourly |
Surface air minimum temperature | mn2t6 | K | 6-hourly |
Surface air temperature | 2t | K | Daily averaged |
Surface air dewpoint temperature | 2d | 2d | Daily averaged |
Sea surface temperature | wtmp | K | Daily averaged |
Sea ice cover | ci | proportion | Daily averaged |
Surface pressure | sp | Pa | Instantaneous once a day (00Z) |
Time-integrated top net thermal radiation | ttr | W m-2 s | Accumulated, archived every 24 hours |
Time-integrated surface latent heat flux | slhf | W m-2 s | Accumulated, archived every 24 hours |
Time-integrated surface net solar radiation | ssr | W m-2 s | Accumulated, archived every 24 hours |
Time-integrated surface net thermal radiation | str | W m-2 s | Accumulated, archived every 24 hours |
Time-integrated surface sensible heat flux | sshf | W m-2 s | Accumulated, archived every 24 hours |
Time-integrated surface solar radiation downwards | ssrd | W m-2 s | Accumulated, archived every 24 hours |
Time-integrated surface thermal radiation downwards | strd | W m-2 s | Accumulated, archived every 24 hours |
Total cloud cover | tcc | % | Daily averaged |
Total column water | tcw | kg m-2 | Daily averaged |
Total precipitation | tp | kg m-2 | Accumulated, 6-hourly |
Convective precipitation | cp | kg m-2 | Accumulated, archived every 24 hours |
Northward turbulent surface stress | nsss | N m-2 s | Accumulated, archived every 24 hours |
Eastward turbulent surface stress | ewss | N m-2 s | Accumulated, archived every 24 hours |
Mean sea-level pressure | msl | Pa | Instantaneous once a day (00Z) |
Water runoff and drainage | ro | kg m-2 | Accumulated, archived every 24 hours |
Surface water runoff | sro | kg m-2 | Accumulated, archived every 24 hours |
Land sea mask | lsm | Proportion of land | Instantaneous once a day (00Z) Only control forecast |
Orography | orog | gpm | Instantaneous once a day (00Z) Only control forecast |
Soil type | slt | Categorical | Instantaneous once a day (00Z) Only control forecast |