The Uam2ncf program takes UAM EMISSIONS gridded files and creates an I/O API gridded file from them, which can then be merged with other gridded SMOKE I/O API files. This program is useful for converting area, nonroad mobile, on-road mobile, and biogenic UAM-ready files to the I/O API format needed for CMAQ. Uam2ncf can also be used with low-level point sources, but not with the elevated-point-source inputs for UAM and CAMX.
If you wish to create CMAQ inputs from model-ready emissions for UAM or CAMX, you must take the following steps:
Use Uam2ncf to convert individual source categories for area, biogenic, and mobile sources to I/O API format.
Run SMOKE for point-source inventory to create 3-D I/O API file.
Run Mrggrid to combine converted inventory for nonpoint sources with SMOKE-created inventory for point sources.
Because this optional program operates on model-ready files, it is run before the CMAQ air quality model.
| File Name | Format | Description |
|---|---|---|
GRIDDESC |
ASCII | Grid descriptions file that defines the input grid in the UAMEMIS file. This is needed because the UAMEMIS file does not include enough information to describe the grid for the I/O API. The file must include the name of the grid
set by the IOAPI_GRIDNAME_1 environment variable setting.
|
UAMEMIS |
Fortran binary | UAM-ready, gridded, hourly, speciated emissions file. |
IOAPI_GRIDNAME_1: [default: blank]
This variable sets the name of the input (and output) grid definition to be read from the GRIDDESC input file. The name can be a maximum of 16 characters long (the limitation of I/O API grid names).