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Below is a list of all agreed upon parameters. Participating Centres 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.
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| Name | Abbreviation | Unit |
| Cloud cover | cc | % |
| Specific cloud liquid water content | clwc | kg kg**-1 |
| Specific cloud ice water content | ciwc | kg kg**-1 |
| Geopotential heigh | gh | gpm |
| Relative humidity | rh | % |
| Temperature | t | K |
| U-velocity | u | m s-1 |
| V-velocity | v | m s-1 |
Parameters on height levels
Height level parameters
Output of forecasts and analyses on pressure levels for defined time steps.
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| Name | Abbreviation | Unit |
| Cloud cover | cc | % |
| Specific cloud liquid water content | clwc | kg kg**-1 |
| Specific cloud ice water content | ciwc | kg kg**-1 |
| Pressure | pres | Pa |
| Relative humidity | rh | % |
| Temperature | t | K |
| Wind speed | ws | m s-1 |
| Wind direction | wdir | deg |
WORK IN PROGRESS!
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Surface level parameters
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The following parameters are available on one potential temperature level (320 K) |
Time steps:
Analysis:
● Store analysis output in six hourly intervals at 00 UTC, 06 UTC, 12 UTC, 18 UTC for the Unified Model, Harmonie, MESCAN
● Store hourly analysis output for COSMO, MESAN, SURFEX
Forecast:
● Store forecast output at T+1,2,3,4,5,6,9,12,15,18,21,24,27,30 started at 00 UTC and 12 UTC for the Unified Model, COSMO, Harmonie
● Store forecast output at T+1,2,3,4,5,6 started at 06 UTC and 18 UTC for the Unified Model, COSMO, Harmonie
| Name | Abbreviation | Unit |
Precipitation and humidity | ||
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| Surface air relative humidity *** | rh | % |
| Surface water runoff *** | sro | kg m-2 |
| Total column water *** | tcw | kg m-2 |
| Total precipitation | tp | kg m-2 |
Single-level parameters
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| Potential temperature level parameters | ||||||
Single-level parameters
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The following parameters are available on single levels | ||||||
| Name | Abbreviation | Unit | Frequency | 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, | 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)||||
| Orography | orog | gpm | Instantaneous once a day (00Z) Only control forecast | |||
| Soil type | slt | Categorical |