GRIB2 - PRODUCT DEFINITION TEMPLATE 4.127

Individual ensemble forecast, control and perturbed, at a horizontal
level or in a horizontal layer in a continuous or non-continuous time interval for radionuclides

Created 07/12/2024


Octet No. Contents
10
Parameter category (see Code table 4.1)
11
Parameter number (see Code table 4.2)
12-13
Atmospheric chemical constituent type (see Code table 4.230)
14
Source or sink (see Code table 4.238)
15-16
Transport model used (see Code table 4.333)
17-18
Requested by entity (see Common Code table C-11)
19-20
Scenario origin (see Code table 4.335)
21-22
NWP used (see Code table 4.336)
23-24
Release start year
25
Release start month
26
Release start day
27
Release start hour
28
Release start minute
29
Release start second
30-31
Wall clock initial time of execution (Year)
32
Wall clock initial time of execution (month)
33
Wall clock initial time of execution (day)
34
Wall clock initial time of execution (hour)
35
Wall clock initial time of execution (minute)
36
Wall clock initial time of execution (second)
37
Type of generating process (see Code table 4.3)
38
Background generating process identifier (defined by originating center)
39
Analysis or forecast generating process identifier (defined by originating center)
40-41
Hours after reference time of data cut-off (see Note)
42
Minutes after reference time of data cut-off
43
Indicator of unit of time range (see Code table 4.4)
44-47
Forecast time in units defined by octet 43
48
Type of first fixed surface (see Code table 4.5)
49
Scale factor of first fixed surface
50-53
Scaled value of first fixed surface
54
Type of second fixed surface (see Code table 4.5)
55
Scale factor of second fixed surface
56-59
Scaled value of second fixed surface
60
Type of ensemble forecast (see Code table 4.6)
61
Perturbation Number
62
Number of forecasts in ensemble
63-64
Year of end of overall time interval
65
Month of end of overall time interval
66
Day of end of overall time interval
67
Hour of end of overall time interval
68
Minute of end of overall time interval
69
Second of end of overall time interval
70
n - number of time range specifications describing the time intervals used to calculate the statistically processed field
71-74
Total number of data values missing in statistical process

75-86 Specification of the outermost (or only) time range over which statistical processing is done
75
Statistical process used to calculate the processed field from the field at each time increment during the time range (see Code table 4.10)
76
Type of time increment between successive fields used in the statistical processing (see Code table 4.11)
77
Indicator of unit of time for time range over which statistical processing is done (see Code table 4.4)
78-81
Length of the time range over which statistical processing is done, in units defined by the previous octet
82
Indicator of unit of time for the increment between the successive fields used (see Code table 4.4)
83-86
Time increment between successive fields, in units defined by the previous octet

87-nn These octets are included only if n > 1, where nn = 75 + 12 x n
87-98
As octets 75 to 86, next innermost step of processing
99-nn
Additional time range specifications, included in accordance with the value of n. Contents as octets 75 to 86, repeated as necessary


Notes:

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



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