SMAT-CE

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 PM_2.5 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, PM_2.5, and Regional Haze (PDF)(205 pp, 2 MB, 11-29-2018, 454-R-18-009).

Notes:

• SMAT-CE version 1.6 has been updated with PM_2.5, regional haze, and ozone ambient data through 2017.
• For the annual and daily PM_2.5 tests, the default “blank mass” values for PM_2.5 have been reduced from 0.5 ug/m³ to 0.2 ug/m³, consistent with recommendations in the photochemical modeling guidance.

Downloads:

• SMAT-CE v1.6 Installer Package (EXE) (1.4 G, 10/28/2019) 
• Installation instructions
  • Download and open the installer package. The SMAT executable and supporting files will be installed to: C:\Program Files (x86)\SMAT-CE . Once you run the SMAT executable, 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.

SMAT-CE comments and questions should be sent to Brian Timin at timin.brian@epa.gov.