KSEC1 element Contents GRIB octet Recommended GRIB_API key Coded GRIB_API keys Comments
37
ECMWF local GRIB use definition identifier.
50 = Member state 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
Number:
Ensemble forecast number.
Control forecast is number 0,
perturbed foecasts 1 - nn.
Set to 0 if not ensemble forecast.
50 number
perturbationNumber

43
Total:
Total number of forecasts in ensemble.
This number includes the control forecast.
Set to 0 if not ensemble forecast.
51 numberOfForecastsInEnsemble
numberOfForecastsInEnsemble

44 Model identifier (in range 1 - 255) 52 modelIdentifier
modelIdentifier

45 Latitude of North-west corner of area (degrees*10^6) 53 - 56 latitudeOfNorthWestCornerOfArea
latitudeOfNorthWestCornerOfArea

46 Longitude of North-west corner of area (degrees*10^6) 57 - 60 longitudeOfNorthWestCornerOfArea
longitudeOfNorthWestCornerOfArea

47 Latitude of South-east corner of area (degrees*10^6) 61 - 64 latitudeOfSouthEastCornerOfArea
latitudeOfSouthEastCornerOfArea

48 Longitude of South-east corner of area (degrees*10^6) 65 - 68 longitudeOfSouthEastCornerOfArea
longitudeOfSouthEastCornerOfArea

49 - 60 Reserved for ECMWF additions 69 - 116


49 Original parameter number 69 originalParameterNumber
originalParameterNumber

50 Original parameter table number 70 originalParameterTableNumber
originalParameterTableNumber
51 - 60 Set to zero 71 - 116


61 - 106 Optional data 117 - 300 optionalData
optionalData