KSEC1 element | Contents | GRIB octet | Recommended GRIB_API keys | Coded GRIB_API keys | Comments
--- | --- | --- | --- | --- | ---
37 |
    ECMWF local GRIB use definition identifier.
    22= coupled Atmospheric, Wave and Ocean models (with hindcast support))
| 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 member number | 50-51 |  |  |
43 | Total number of ensembles. | 52-53 |  |  |
44 |
    System number (the "scientific version" number):
            0 = RD experiment
      1-65534 = operational version number
        65535 = missing
| 54-55 |  |  |
45 |
    Method number: distinguishes scientifically different forecast ensembles
    (eg different calibration/bias correction)
              0 = control integration (ie without data assimilation)
      1 - 65534 = operational version number
| 56-57 |  |  |
46 | Reference date (YYYYMMDD) | 58-61 |  |  |
47 | Climate date - from (YYYYMMDD) | 62-65 |  |  |
48 | Climate date - to (YYYYMMDD) | 66-69 |  |  |