Regional Air Quality Modeling Analyses

Regional Air Quality Modeling Analyses


In accordance with the Clean Air Act, modeling analyses must be done for two reasons. One is to prove attainment and maintenance of the federal air quality standards. The other is to evaluate the effectiveness of control measures. Regional air quality modeling work is conducted by MAG for carbon monoxide, ozone, and particulate matter.

The modeling process involves a wide range of technical procedures. These include developing emissions inventories, validating modeling procedures, and simulating future air quality conditions. Modeling analyses must also be performed to determine the conformity of transportation plans, programs, and projects. These analyses have been performed since the 1990 Clean Air Act Amendments took effect.

It is vital to maintain, update, and enhance the air quality models to determine conformity and for preparing air quality plans. Well maintained, updated, and enhanced models produce crucial data about pollution problems in Maricopa County. These models also enable effective regional air quality planning.

MAG’s air quality modeling staff validates emissions, meteorology, and air quality models developed by the U.S. Environmental Protection Agency (EPA), Federal Aviation Administration (FAA), and the National Center for Atmospheric Research (NCAR). This is done for air quality and emission modeling analyses.

Air Quality Air Quality Boundaries in the MAG Region

Ozone Modeling Domains WRF and CAMx Nested Ozone Modeling Domains for Photochemical Air Quality Modeling Analyses

MAG Air Quality Modeling System Flowchart MAG Air Quality Modeling System Flowchart

Ozone Plume Ozone Plume Transport from Southern California and Mexico to the Northeast Region of the U.S. through Arizona in May 31, 2011

About MAG

The Maricopa Association of Governments (MAG) is a Council of Governments (COG) that serves as the regional planning agency for the metropolitan Phoenix area.

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Title VI requires that no person in the United States of America shall, on the grounds of race, color, or national origin, be excluded from the participation in, be denied the benefits of, or be otherwise subjected to discrimination under any program or activity for which MAG receives federal financial assistance.

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  • Address: 302 N. First Ave., Suite 300
    Phoenix, Arizona 85003

  • Phone: 602-254-6300

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