Section 4 - Template 46 : Average, accumulation, and/or extreme values or other statistically processed values at a horizontal level or in a horizontal layer in a continuous or noncontinuous time interval for aerosol

Templates for Section 4

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Octets Key Type Content
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 size (see Code Table 4.91)
15 Scale factor of first size
16-19 Scaled value of first size in meters
20 Scale factor of second size
21-24 Scaled 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 (defined by originating Centre)
28-29 Hours after reference time of data cut-off (see Note 1)
30 Minutes after reference time of data cut-off
31 Indicator of unit of time range (see Code Table 4.4)
32-35 Forecast time in units defined by octet 18 (see Note 2)
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
48-49 Year |
50 Month |
51 Day |Time of end of overall time interval
52 Hour |
53 Minute |
54 Second |
55 n - Number of time range specifications describing the time intervals used to calculate the statistically processed field
56-59 Total number of data values missing in statistical process.
60-71 Specification of the outermost (or only) time range over which statistical processing is done
60 Statistical process used to calculate the processed field from the field at each time increment during the time range (see Code Table 4.10)
61 Type of time increment between successive fields used in the statistical processing (see Code Table 4.11)
62 Indicator of unit of time for time range over which statistical processing is done (see Code Table 4.4)
63-66 Length of the time range over which statistical processing is done, in units defined by the previous octet
67 Indicator of unit of time for the increment between the successive fields used (see Code Table 4.4)
68-71 Time increment between successive fields, in units defined by the previous octet (see Notes 3 and 4)
72-nn These octets are included only if n>1, where nn = 59 + 12 * n
72-83 As octets 60 to 71, next innermost step of processing
72-nn Additional time range specifications, included in accordance with the value of n. Contents as octets 60 to 71, repeated as necessary.
Notes:

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

( 2) The reference time in section 1 and the forecast time together define the beginning of the overall time interval.

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

( 4) The reference and forecast times are successively set to their initial values plus or minus the increment, as defined by the type of time increment (one of octets 61, 72 ...). For all but the innermost (last) time range, the next inner range is then processed using these reference and forecast times as the initial reference and forecast time.