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