KSEC1 element | Contents | GRIB octet | Recommended GRIB_API keys | Coded GRIB_API keys | Comments
--- | --- | --- | --- | --- | ---
37 |
    ECMWF local GRIB use definition identifier.
    18 = Multi-analysis ensemble data
| 41 | localDefinitionNumber | localDefinitionNumber |
38 | Class | 42 | class | marsClass |
39 | Type | 43 | type | marsType |
40 | Stream | 44-45 | stream | marsStream |
41 |
    Version number or experiment identifier.
    (4 ASCII characters, right justified)
| 46-49 | expver | experimentVersionNumber |
42 |
    Ensemble forecast number:
    = 0 for a control forecast.
    Not used for analysis (set to zero)
| 50 | perturbationNumber | perturbationNumber |
43 |
    Total number of forecasts in ensemble.
    (Set to 1 for analysis)
| 51 | numberOfForecastsInEnsemble | numberOfForecastsInEnsemble |
44 |
    Data origin
        = WMO identifier of centre providing the analysis
        = 255 for a consensus product
| 52 | origin | dataOrigin |
45 |
    Model
        Four character identifier of forecast used
        = "ECMF" for ECMWF IFS
        = WMO centre CCCC identifier otherwise
    (4 Ascii characters, right justified)
| 53 - 56 | modelIdentifier | modelIdentifier |
46 |
    Consensus count
        Indicates the composition of the starting analysis for a
        product (analysis, forecast, ..)
        = 0 for a product from one centre (ie not a consensus product)
        = n for a consensus product, where n is the number of
          analyses used in the consensus analysis.
          (nb. This allows the case n = 1.)
| 57 | consensusCount | consensusCount |
- | Spare (set to zero) | 58 - 60 |  |  |
47 - 61 |
    WMO centre CCCC identifiers for the analyses used, eg "KWBC".
    (4 Ascii characters, right justified)
    Unused list entries are set to four blanks.
| 61 - 120 | ccccIdentifiers | ccccIdentifiers | consensusCount values