GRIB2 - PRODUCT DEFINITION TEMPLATE 4.50

Analysis or Forecast at a horizontal level
or in a horizontal layer at a point in time
for Aerosol

Created 09/22/2025


Octet No. Contents
10
Parameter category (see Code table 4.1)
11
Parameter number (see Code table 4.2)
12-13
Aerosol Type (see Code table 4.233)
14
Type of interval for first and second sizes (see Code table 4.91)
15
Scale factor of first size
16-19
Scale value of first size in meters
20
Scale factor of second size
21-24
Scale value of second size in meters
25 Type of generating process (see Code table 4.3)
26 Background generating process identifier (defined by originating centre)
27 Analysis or forecast generating process identifier (see Code ON388 Table A)
28-29
Hours of observational data cutoff after reference time (see Note 1)
30 Minutes of observational data cutoff after reference time
31Indicator of unit of time range (see Code table 4.4)
32-35 Forecast time in units defined by octet 31
36
Type of first fixed surface (see Code table 4.5)
37 Scale factor of first fixed surface
38-41 Scaled value of first fixed surface
42 Type of second fixed surface (see Code table 4.5)
43 Scale factor of second fixed surface
44-47 Scaled value of second fixed surface


Notes:

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


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