VM - GRIB - WMO version 37 Template

Values

Product definition template 4.14 - derived forecasts based on a cluster of ensemble members over a circular area at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval

Octet Number	Description	Note	Status
None	77-88 Specification of the outermost (or only) time range over which statistical processing is done	None	Operational
None	89-nn These octets are included only if n > 1, where nn = 76 + 12 x n	None	Operational
(nn+1)-(nn+NC)	List of NC ensemble forecast numbers (NC is given in octet 54)	None	Operational
10	Parameter category	Code/Flag Table 4.1	Operational
11	Parameter number	Code/Flag Table 4.2	Operational
12	Type of generating process	Code/Flag Table 4.3	Operational
13	Background generating process identifier (defined by originating centre)	None	Operational
14	Forecast generating process identifier (defined by originating centre)	None	Operational
15-16	Hours after reference time of data cut-off	(see Note 1)	Operational
17	Minutes after reference time of data cut-off	None	Operational
18	Indicator of unit of time range	Code/Flag Table 4.4	Operational
19-22	Forecast time in units defined by octet 18	(see Note 2)	Operational
23	Type of first fixed surface	Code/Flag Table 4.5	Operational
24	Scale factor of first fixed surface	None	Operational
25-28	Scaled value of first fixed surface	None	Operational
29	Type of second fixed surface	Code/Flag Table 4.5	Operational
30	Scale factor of second fixed surface	None	Operational
31-34	Scaled value of second fixed surface	None	Operational
35	Derived forecast	Code/Flag Table 4.7	Operational
36	Number of forecasts in the ensemble (N)	None	Operational
37	Cluster identifier	None	Operational
38	Number of cluster to which the high-resolution control belongs	None	Operational
39	Number of cluster to which the low-resolution control belongs	None	Operational
40	Total number of clusters	None	Operational
41	Clustering method	Code/Flag Table 4.8	Operational
42-45	Latitude of central point in cluster domain	None	Operational
46-49	Longitude of central point in cluster domain	None	Operational
50-53	Radius of cluster domain	None	Operational
54	NC - number of forecasts in the cluster	None	Operational
55	Scale factor of standard deviation in the cluster	None	Operational
56-59	Scaled value of standard deviation in the cluster	None	Operational
60	Scale factor of distance of the cluster from ensemble mean	None	Operational
61-64	Scaled value of distance of the cluster from ensemble mean	None	Operational
65-66	Year of end of overall time interval	None	Operational
67	Month of end of overall time interval	None	Operational
68	Day of end of overall time interval	None	Operational
69	Hour of end of overall time interval	None	Operational
70	Minute of end of overall time interval	None	Operational
71	Second of end of overall time interval	None	Operational
72	n - number of time range specifications describing the time intervals used to calculate the statistically processed field	None	Operational
73-76	Total number of data values missing in statistical process	None	Operational
77	Statistical process used to calculate the processed field from the field at each time increment during the time range	Code/Flag Table 4.10	Operational
78	Type of time increment between successive fields used in the statistical processing	Code/Flag Table 4.11	Operational
79	Indicator of unit of time for time range over which statistical processing is done	Code/Flag Table 4.4	Operational
80-83	Length of the time range over which statistical processing is done, in units defined by the previous octet	None	Operational
84	Indicator of unit of time for the increment between the successive fields used	Code/Flag Table 4.4	Operational
85-88	Time increment between successive fields, in units defined by the previous octet	(see Notes 3 and 4)	Operational
89-110	As octets 77 to 88, next innermost step of processing	None	Operational
111-nn	Additional time range specifications, included in accordance with the value of n. Contents as octets 77 to 88, repeated as necessary	None	Operational

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