KSEC1 element | Contents | GRIB octet | Recommended GRIB_API keys | Coded GRIB_API keys | Comments
--- | --- | --- | --- | --- | ---
37 |
    ECMWF local GRIB use definition identifier.
    7 = sensitivity 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 |
    Forecast number (if type = 51)
    Iteration number (if type not 51)
| 50 | iteration | iterationNumber |
43 |
    Total number of diagnostics (if type = 50).
    0 for trajectory forecast (if type=51).
    Number of iterations in diagnostic minimisation (if type=52).
| 51 | numberOfForecastsInEnsemble | numberOfForecastsInEnsemble |
44 |
    Domain:
     0 = Global
     1 = Europe
     2 = Northern hemisphere
     3 = Southern hemisphere
| 52 | domain | domain |
45 | Diagnostic number | 53 | diagnostic | diagnosticNumber |
- | Spare (set to zero) | 54 |  |  |