Photochemical Modeling Tools
The Air Quality Modeling Group has been working over the last several years on a replacement for MATS. The new software is called SMAT-CE (Software for the Modeled Attainment Test - Community Edition) and is being formally released as a replacement for MATS.
SMAT-CE replicates the same tests that are performed by MATS, with identical (or nearly identical) results. SMAT performs the ozone and PM2.5 attainment tests and calculates changes in future year visibility at Class I areas. Detailed information on the recommended attainment tests can be found in EPA's photochemical modeling guidance, Modeling Guidance for Demonstrating Attainment of Air Quality Goals for Ozone, PM2.5, and Regional Haze (PDF)(205 pp, 2 MB, 11-29-2018, 454-R-18-009).
- SMAT-CE version 2.1 has the most recently updated ambient monitoring dataset available.
- Installation is now done with two executables – one for SMAT setup and one for data. Users need to run both.
- Changed default SMAT installation directory to resolve software installation privilege issues in Windows.
- SMAT-CE v2.1 Setup (EXE) (153 MB, 08/26/2022)
- SMAT-CE v2.0 Data Installer (EXE) (1.37 GB, 07/12/2022)
- SMAT-VE v2.1 User's Guide (PDF)(5.45 MB, 08/01/2022, 454-B-22-013)
- Installation instructions
- Download and open the installer package. Both of the SMAT software program (SMAT-CE 2.1 Setup.exe) and supporting data files (SMAT-CE 2.0 Data.exe) will need to be installed. They will be located under: C:\ Documents\My SMAT-CE Files\* . Once you run the SMAT executable (by clicking the “SMAT-CE 2.1” icon on the window desktop), you will be able to choose between “Annual PM analysis”, “Daily PM Analysis”, “Ozone analysis”, and “Visibility Analysis”.
- The GUI will look familiar to MATS users. There is also a user’s guide built into the GUI. Note that all SMAT output files will be sent to a different location from the executable and default ambient data files. All configuration files and SMAT generated outputs are sent to the “My SMAT-CE Files” directory under “my documents”. SMAT uses the same data input formats as MATS. All old MATS input files should work directly with SMAT.
- The most recent ambient data files (as of March 2022) for Ozone, PM, and IMPROVE are located here: https://gaftp.epa.gov/Air/aqmg/SMAT/Ambient_Data/2021/
SMAT-CE comments and questions should be sent to Chris Misenis at Misenis.Chris@epa.gov.