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Photochemical Modeling Tools
MATS
The Air Quality Modeling Group has developed the Modeled Attainment Test Software (MATS). MATS
is a PC-based software tool that can perform the modeled attainment tests for particulate matter
(PM2.5) and ozone (O3), and perform the uniform rate of progress analysis for regional haze (visibility). Detailed information on the recommended attainment tests can be found in U.S. EPA's modeling guidance,
Guidance on the
Use of Models and Other Analyses for Demonstrating Attainment of the Air Quality Goals for Ozone,
PM2.5, and Regional Haze."
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Downloads |
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As MATS is being refined, there will likely be frequent updates. If you are interested in receiving
an email notice when updated versions are available, please complete the fields below. You may contact EPA regarding
MATS at: mats@epa.gov
- MATS version 1.5.1: Version 1.5.1 adds some additional functionality to the ozone and visibility tests and
also corrects several bugs. The changes are documented here: version 1.5.1 change log
This version performs the ozone and visibility tests outlined in the modeling guidance. The PM2.5 attainment tests are not currently implemented. An updated
version (which includes the PM2.5 attainment test) is currently in beta testing and will be posted when available. Note that default PM2.5 ambient data sets are
included in this installer package even though the PM2.5 attainment test is not yet implemeted. The PM2.5 files will be used in later versions.
If a previous version of MATS is installed, please uninstall the old version before installing the new version.
- MATS 1.5.1 installer package -
The installer package is large (~250Mb) due to the inclusion of several large example model and ambient datasets.
- MATS 1.5.1 executable
- The executable
(~7Mb) will only work if the installer package is installed first. We
are providing the executable as a separate download because there may
be periodic updates to the executable that don't require downloading
and installing the entire installer package.
- MATS 1.5.1 User's Manual - A PDF version of the user's
manual is also included in the MATS installer package. Additionally, the
user's manual is built into the help section of the MATS graphical user interface.
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