The gridding cross-reference files are used to match the emissions sources with the spatial surrogates in the surrogates file.
The way that of the gridding cross-reference files are applied in SMOKE ensures that the most-specific matches override the
less-specific ones. A description of how the gridding cross-reference is applied to the inventory is provided in Section 6.4, “Grdmat”. The format of the
MGREF files is shown in Table 8.37, “Format for
Table 8.37. Format for
Country/state/county code (6-digit Character YSSCCC) (optional):
|B||20-digit SCC (Character) (optional, set to zero if not SCC-dependent)|
|C||Spatial surrogate code (Integer) (required)|