GRIB2 - PRODUCT DEFINITION TEMPLATE 4.140

Individual ensemble reforecast, control and perturbed, at a horizontal level or in a horizontal layer
at a point in time for waves selected by period range

Created 09/29/2025


Octet No. Contents
10
Parameter category (see Code table 4.1)
11
Parameter number (see Code table 4.2)
12
Type of wave period interval (see Code table 4.91)
13
Scale factor of lower wave period limit
14-17
Scaled value of lower wave period limit (see Note 1)
18
Scale factor of upper wave period limit
19-22
Scaled value of upper wave period limit (see Note 1)
23
Type of generating process (see Code table 4.3)
24
Background generating process identifier (defined by originating centre)
25
Analysis or forecast generating process identifier (see ON388 Table A)
26-27
Hours of observational data cut-off after reference time (see Note 2)
28
Minutes of observational data cut-off after reference time
29
Indicator of unit of time range (see Code table 4.4)
30-33
Forecast time in units defined by octet 29
34
Type of first fixed surface (see Code table 4.5)
35
Scale factor of first fixed surface
36-39
Scaled value of first fixed surface
40
Type of second fixed surface (see Code table 4.5)
41
Scale factor of second fixed surface
42-45
Scaled value of second fixed surface
46
Type of ensemble forecast (see Code table 4.6)
47-50
Perturbation number
51-54
Number of forecasts in ensemble
55-56
Year of model version date
57
Month of model version date
58
Day of model version date
59
Hour of model version date
60
Minute of model version date
61
Second of model version date


Notes:

(1)  Wave periods should be specified in seconds.

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


Back