Local definition 23: Coupled atmospheric, wave and ocean means (with hindcast support)

Local definitions

Octets Key Type Contents
41 localDefinitionNumber unsigned ECMWF local GRIB use definition identifier. 23 = Coupled atmospheric, wave and ocean models (with hindcast support)
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)
50-51 perturbationNumber unsigned Ensemble member number. Control forecast is number 0, perturbed forecasts are 1-nn.
81-82 numberOfForecastsInEnsemble unsigned Number of forecasts in ensemble
52-53 systemNumber unsigned System number: the "scientific version" number. 0 = RD experiment 1 - 65534 = operational version number 65535 = missing
54-55 methodNumber unsigned Method number Distinguishes scientifically different forecast ensembles (eg different calibration/bias correction) 0 = control integration (ie without data assimilation) 1 - 65534 = operational version number
56-59 verifyingMonth unsigned Verifying month (in format YYYYMM), or period used for mean (dddDDD for period from time ddd to time DDD)
60 averagingPeriod unsigned Averaging period (eg 6-hour, 24-hour)
61-62 forecastMonth unsigned Forecast month
63-66 referenceDate unsigned Reference date (YYYYMMDD)
67-70 climateDateFrom unsigned Climate date - from (YYYYMMDD)
71-74 climateDateTo unsigned Climate date - to (YYYYMMDD)
75-84 Probability information
75 unitsDecimalScaleFactor signed Threshold units decimal scale factor. + or - power of 10 (or zero). Most significant bit = 1 for negative values.
76 thresholdIndicator unsigned Threshold indicator: 1 = Only lower threshold is present. 2 = Only upper threshold is present. 3 = Both upper and lower thresholds are present.
77-78 lowerThresholdValue unsigned Lower threshold value.
79-80 upperThresholdValue unsigned Upper threshold value.
83-84 Spare (set to zero)