Specification of the input data:
Data format: WMO-GRIB2
Time step frequency: 3h (cumulated parameters will be not archived at step 0)
Grid: original model grid
Parameters: parameters listed below (most of them are so called High Priority according to the TIGGE-LAM project plan)
- Model runs: up-to 4 of all available with preference for the ones from the main forecast times (00, 06, 12, 18UTC)
- Forecast types: perturbed, control (if available)
- Static fields (orography, land-sea mask) are archived only for step 0 and control forecast (if exists) or the first perturbed forecast
High Priority parameters:
| parameter | Abbr. | Level | Units | GRIB2 paramId | type (3) | remark |
|---|---|---|---|---|---|---|
Perturbed fields provided at 3-h interval (including step 0) | ||||||
| 10m U-velocity | 10u | 10m | m s-1 | 165 | HP | |
| 10m V-velocity | 10v | 10m | m s-1 | 166 | HP | |
Convective available potential energy | cape | surface | J kg-1 | 59 | ||
Convective inhibition | cin | surface | J kg-1 | 228001 | values must be <=0 (non-positive) | |
| Mean sea level pressure | mslp | MSL | Pa | 151 | HP | |
Surface air temperature | 2t | 1.25-2m | K | 167 | HP | |
Surface air dew point temperature | 2d | 1.25-2m | K | 168 | HP | |
Perturbed fields provided at 3-h interval (excluding step 0) | ||||||
Total precipitation (liquid + frozen) (4) | tp | surface | kg m-2 | 228228 | HP | |
Large scale precipitation (1) (4) | lsp | surface | kg m-2 | 3062 | HP | |
| 10 metre wind gust in the last 3 hours (1) | 10fg3 | 10m | m s-1 | 228028 | HP | |
Fields provided at step 0 (static or perturbed) (2) | ||||||
Orography (Geopotential height at the surface) | orog | surface | gpm | 228002 | HP | |
Land-sea mask | lsm | surface | proportion (0-1 values) | 172 | HP | |
(1) Newly introduced parameters which are not stored in TIGGE (global) archive.
(2) If control forecast exists the field should be provided with it otherwise with the 1st ensemble member, always only at step 0. If the fields are perturbed there should be provided with every ensemble member, and control forecast if exists, at step 0.
(3) HP = High Priority parameter according to TIGGE-LAM expert team plans
(4) accumulated from the beginning of the forecast