Section 4 - Template 4 : Derived forecasts based on a cluster of ensemble members over a circular area at a horizontal level or in a horizontal layer at a point in time

Octets Key Type Content
10 parameterCategory codetable Parameter category (see Code Table 4.1)
11 parameterNumber codetable Parameter number (see Code Table 4.2)
12 typeOfGeneratingProcess codetable Type of generating process (see Code Table 4.3)
13 backgroundProcess unsigned Background generating process identifier (defined by originating Centre)
14 generatingProcessIdentifier unsigned Forecast generating process identifier (defined by originating Centre)
15-16 hoursAfterDataCutoff unsigned Hours after reference time of data cutoff (see Note 1)
17 minutesAfterDataCutoff unsigned Minutes after reference time of data cutoff
18 indicatorOfUnitOfTimeRange codetable Indicator of unit of time range (see Code Table 4.4)
19-22 forecastTime signed Forecast time in units defined by octet 18
23 typeOfFirstFixedSurface codetable Type of first fixed surface (see Code Table 4.5)
24 scaleFactorOfFirstFixedSurface signed Scale factor of first fixed surface
25-28 scaledValueOfFirstFixedSurface unsigned Scaled value of first fixed surface
29 typeOfSecondFixedSurface codetable Type of second fixed surface (see Code Table 4.5)
30 scaleFactorOfSecondFixedSurface signed Scale factor of second fixed surface
31-34 scaledValueOfSecondFixedSurface unsigned Scaled value of second fixed surface
35 derivedForecast codetable Derived forecast (see Code Table 4.7)
36 numberOfForecastsInEnsemble unsigned Number of forecasts in the ensemble (N)
37 clusterIdentifier unsigned Cluster identifier
38 NH unsigned Number of cluster to which the high resolution control belongs
39 NL unsigned Number of cluster to which the low resolution control belongs
40 totalNumberOfClusters unsigned Total number of clusters
41 clusteringMethod codetable Clustering method (see Code Table 4.8)
42-45 latitudeOfCentralPointInClusterDomain unsigned Latitude of central point in cluster domain
46-49 longitudeOfCentralPointInClusterDomain unsigned Longitude of central point in cluster domain
50-53 radiusOfClusterDomain unsigned Radius of cluster domain
54 numberOfForecastsInTheCluster unsigned NC - Number of forecasts in the cluster
55 scaleFactorOfStandardDeviation unsigned Scale factor of standard deviation in the cluster
56-59 scaledValueOfStandardDeviation unsigned Scaled value of standard deviation in the cluster
60 scaleFactorOfDistanceFromEnsembleMean unsigned Scale factor of distance of the cluster from ensemble mean
61-64 scaledValueOfDistanceFromEnsembleMean unsigned Scaled value of distance of the cluster from ensemble mean
65-(64+NC) List of NC ensemble forecast numbers (NC is given in octet 54)

( 1) Hours greater than 65534 will be coded as 65534.