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