Under development at ECMWF
Based on: https://codes.ecmwf.int/grib/param-db/
Upper-air (3-d variables)
| Name | Shortname (click to see GRIB2 key definition) | Unit | test data |
|---|---|---|---|
| Temperature | t | K | t.grb |
| Specific humidity | q | kg kg-1 | q.grb |
| U component of wind | u | m s-1 | u.grb |
| v component of wind | v | m s-1 | v.grb |
| Geopotential** | gp | m2 s-2 | gh.grb |
** Or Geopotential height as in TIGGE.
Surface (2-d variables)
| Name | Shortname (click to see GRIB2 key definition) | Unit | test data |
|---|---|---|---|
| Mean sea level pressure | msl | Pa | msl.grb |
| Surface Pressure | sp | Pa | sp.grb |
| 2-metre temperature | 2t | K | 2t.grb |
| 2-metre specific humidity | 2sh | kg kg-1 | 2sh.grb |
| 2-metre dew point | 2d | K | 2d.grb |
| Sea-surface temperature | sst | K | sst.grb |
| 10 metre U wind component | 10u | m s-1 | 10u.grb |
| 10 metre V wind component | 10v | m s-1 | 10v.grb |
| Precipitation accumulation since the beginning of the integration | tp | kg m-2 | tp.grb |
| Sea-ice area fraction | ci | 0-1 | ci.grb |
| Se-ice thickness | sithick | ||
| Total cloud cover | tcc | % | tcc.grb |
| Low cloud cover | lcc | % | lcc.grb |
| Mid could cover | mcc | % | mcc.grb |
| High cloud cover | hcc | % | hcc.grb |
| *Surface net short-wave (solar) radiation | ssr | J m**-2 | ssr.grb |
| Surface short-wave (solar) radiation downwards | ssrd | J m**-2 | |
| Surface net long-wave (thermal) radiation | str | J m**-2 | str.grb |
| Surface long-wave (thermal) radiation downwards | strd | J m**-2 | strd.grb |
| Top net short-wave (solar) radiation | tsr | J m**-2 | tsr.grb |
| Top net long-wave (thermal) radiation | ttr | J m**-2 | ttr.grb |
| TOA incident short-wave (solar) radiation | tisr | J m**-2 | tisr.grb |
| Time-integrated surface sensible heat net flux | sshf | J m**-2 | sshf.grb |
| Time-integrated surface latent heat net flux | slhf | J m**-2 | slhf.grb |
* To be decided based on Grib2 version
Example of MARS requests:
Pressure level:
retrieve,
class=od,
date=2024-01-01,
expver=1,
levelist=1/2/3/5/10/20/30/50/70/100/150/200/250/300/400/500/700/850/925/1000,
levtype=pl,
param=z/q/u/v/t,
step=0/to/240/by/6,
stream=oper,
time=00:00:00,
type=fc,
expect=any,
DOMAIN = G,
RESOL = AUTO,
INTERPOLATION = "--interpolation=grid-box-average",
GRID = 0.25/0.25,
TRUNCATION = AUTO,
INTGRID = SOURCE,
target="test_ifs_pl_v2.grb"
Surface level:
retrieve,
class=od,
date=2024-01-01,
expver=1,
levtype=sfc,
param=msl/sp/2t/96.174/2d/sst/10u/10v/tp/ci/tcc/lcc/mcc/hcc/ttr/tsr/str/strd/ssr/ssrd/slhf/sshf/lsm/z,
step=0/to/240/by/6,
stream=oper,
time=00:00:00,
type=fc,
expect=any,
DOMAIN = G,
RESOL = AUTO,
INTERPOLATION = "--interpolation=grid-box-average",
GRID = 0.25/0.25,
TRUNCATION = AUTO,
INTGRID = SOURCE,
target="test_ifs_sfc_v2.grb"