GRIB2 - PRODUCT DEFINITION TEMPLATE 4.1001

Cross-section of averaged or otherwise statistically-processed
analysis or forecast over a range of time

Created 09/21/2007


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
Analysis or forecast generating process identifier (see Code ON388 Table A)
15-16 Hours of observational data cutoff after reference time (see Note 1)
17
Minutes of observational data cutoff after reference time
18
Indicator of unit of time range (see Code Table 4.4)
19-22
Forecast time in units defined by octet 18
23-26
Total number of data values missing in the statistical process
27-38 Specification of the outermost (or only) time range over which statistical processing is done
27
Statistical process used to calculate the processed field from the field at each time increment during the time range (see Code Table 4.10)
28
Type of time increment between successive fields used in the statistical processing (see Code Table 4.11)
29
Indicator of unit of time range over which statistical processing (see Code Table 4.4)
30-33
Length of the time range over which statistical processing is done, in units defined by the previous octet
34
Indicator of unit of time for the increment between the successive fields used (see Code Table 4.4)
35-38
Time increment between successive fields, in units defined by the previous octet (see Note2)


Notes:

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

(2) An increment of zero means that the statistical processing the result of continuous (or near continuous) process, not the processing of a number of discrete samples. Examples of such continuous process are the temperatures measured by analogue maximum and minimum thermometers or thermographs and the rainfall measured by a rain gauge.



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