Figure 6.4, “Grdmat input and output files” shows the input and output files for the Grdmat program. The input files are the spatial surrogates file (
MGPRO), the spatial cross-reference file (
MGREF), the inventory file output from Smkinven (
PNTS), the surrogate description file (
SRGDESC), and the grid description file (
Grdmat outputs a gridding matrix file (
PGMAT) used by other SMOKE programs, and a supplemental gridding file (
MGSUP) that includes all of the spatial surrogate codes assigned to each source. Like all SMOKE programs, Grdmat writes a program log (
||ASCII||Surrogate list, description and surrogate file name used in the modeling grid. Note: we recommand to use multiple files for individual surrogate code which are available from the EPA’s New Surrogates web site.|
||ASCII||Gridding surrogate coefficients|
||ASCII||Gridding surrogate cross-reference file|
||SMOKE map||Intermediate inventory file produced by Smkinven|
||ASCII||Description of the modeling grid|
||I/O API NetCDF||Geographic level code and Timezone for each grid cell|
||I/O API NetCDF||Layer definitions for the CMAQ model domain|
FULLSCC_ONLY: See description in Section 184.108.40.206, “Input Environment Variables”. In this context, this option prevents left-7 SCC assignments using the gridding cross-reference file.
IOAPI_GRIDNAME_1: output modeling grid that global gridded inventory data is re-gridded to.
IOAPI_ISPH: See description in Section 220.127.116.11, “Input Environment Variables”
IMPORT_GRDNETCDF_YN: Y to read the native netCDF annual inventory files
REPORT_DEFAULTS: See description in Section 18.104.22.168, “Input Environment Variables”
SRGPRO_PATH: Defines the location of the Area and Mobile spatial surrogate files. This should be a sub-directory in the
SMK_DEFAULT_SRGID: [default: 100 (Models-3 population surrogate code)] Mandatory, user MUST choose a fallback code.
Defines the surrogate code number to use as a fallback surrogate when the surrogate number set by the cross-reference file
would zero out the emissions for that source. This fallback surrogate is also used to define the county/state/country (FIPS)
codes for use in Grdmat; therefore, a fallback surrogate code is mandatory even if the
SMK_USE_FALLBACK is set to [N]. This code should exist in the
SRGDESC file and be representative on all county/state/countries. See description in Section 8.4.1, “
SRGDESC: Surrogate Designation, Description and Surrogate profile filename.”.
SMK_SOURCE: See description in Section 22.214.171.124, “Input Environment Variables”
||I/O API NetCDF||Gridding matrix containing the factors needed to spatially allocate the input emissions to the grid cells in the modeling domain.|
||ASCII||Gridding supplemental file containing spatial surrogate codes for each source|
||ASCII||Log generated from executing Grdmat|