Local definition 18: Multi-analysis ensemble data

Octets Key Type Contents
41 localDefinitionNumber unsigned ECMWF local GRIB use definition identifier. 18 = Multi-analysis ensemble data
42 class codetable Class
43 type codetable Type
44-45 stream codetable Stream
46-49 experimentVersionNumber ksec1expver Version number or experiment identifier. (4 ASCII characters, right justified)
50 perturbationNumber unsigned Ensemble forecast number: = 0 for a control forecast. Not used for analysis (set to zero)
51 numberOfForecastsInEnsemble unsigned Total number of forecasts in ensemble. (Set to 1 for analysis)
52 dataOrigin codetable Data origin = WMO identifier of centre providing the analysis = 255 for a consensus product
53-56 modelIdentifier ascii Model Four character identifier of forecast used = "ECMF" for ECMWF IFS = WMO centre CCCC identifier otherwise (4 Ascii characters, right justified)
57 consensusCount unsigned 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.)
58-60 Spare (set to zero)
61-120 ccccIdentifiers ascii WMO centre CCCC identifiers for the analyses used, eg "KWBC". (4 Ascii characters, right justified) Unused list entries are set to four blanks.