Section 4 - Template 41 : Individual ensemble forecast, control and perturbed, at a horizontal level or in a horizontal layer at a point in time for atmospheric chemical constituents

Octets Key Type Content
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 Type of generating process (see Code Table 4.3)
15 Background generating process identifier (defined by originating centre)
16 Forecast generating process identifier (defined by originating centre)
17-18 Hours after reference time of data cutoff (see Note 1)
19 Minutes after reference time of data cutoff
20 Indicator of unit of time range (see Code Table 4.4)
21-24 Forecast time in units defined by octet 20
25 Type of first fixed surface (see Code Table 4.5)
26 Scale factor of first fixed surface
27-30 Scaled value of first fixed surface
31 Type of second fixed surface (see Code Table 4.5)
32 Scale factor of second fixed surface
33-36 Scaled value of second fixed surface
37 Type of ensemble forecast (see Code Table 4.6)
38 Perturbation number
39 Number of forecasts in ensemble

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