GRIB2 - PRODUCT DEFINITION TEMPLATE 4.137

Derived reforecast based on all ensemble members at a horizontal level or in a horizontal layer at a point in time

Created 09/26/2025


Octet No. Contents
10
Parameter category (see Code table 4.1)
11
Parameter number (see Code table 4.2)
12
Type of generating process (see Code table 4.3)
13
Background generating process identifier (defined by originating centre)
14
Forecast generating process identifier (see ON388 Table A)
15-16
Hours after reference time of data cut-off (see Note 1)
17
Minutes after reference time of data cut-off
18
Indicator of unit of time range (see Code table 4.4)
19-22
Forecast time in units defined by octet 18
23
Type of first fixed surface (see Code table 4.5)
24
Scale factor of first fixed surface
25-28
Scaled value of first fixed surface
29
Type of second fixed surface (see Code table 4.5)
30
Scale factor of second fixed surface
31-34
Scaled value of second fixed surface
35
Derived forecast (see Code table 4.7)
36-39
Number of forecasts in ensemble
40-41
Year of model version date
42
Month of model version date
43
Day of model version date
44
Hour of model version date
45
Minute of model version date
46
Second of model version date


Notes:

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


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