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Support Center for Regulatory Atmospheric Modeling (SCRAM)

  • The Guideline on Air Quality Models provides the requirements and recommendations for regulatory air quality modeling

  • Photochemical and Dispersion models are critical components of regulatory compliance demonstrations

  • Air quality modeling projects the impacts of air emissions to ensure regulatory compliance

  • Air quality modeling supports regulatory programs required by the Clean Air Act

This website provides access to air quality models and other mathematical simulation techniques used in assessing control strategies and source impacts. 

Training and Resources

Announcements

08/03/2022 - An updated version of SMAT-CE (v2.0) is now available.

07/29/2022 - The final Guidance for Ozone and Fine Particulate Matter Permit Modeling is now available. A release webinar was held on Thursday, August 11.

07/28/2022 - A Model Clearinghouse Concurrence Memorandum to Region 2 regarding the use of AERCOARE-AERMOD as an alternative model for an Outer Continental Shelf permitting effort (Atlantic Shores project) has been added to the MCHISRS database.

07/27/2022 - A Model Clearinghouse Concurrence Memorandum to Region 2 regarding the use of AERCOARE-AERMOD as an alternative model for an Outer Continental Shelf permitting effort (Empire Wind project) has been added to the MCHISRS database.

07/20/2022 - The presentations from the 2022 Regional, State, and Local (RSL) Dispersion Modelers' Workshop are now available.

07/05/2022 - A Model Clearinghouse Concurrence Memorandum to Region 1 regarding the use of AERCOARE-AERMOD as an alternative model for an Outer Continental Shelf permitting effort (New England Wind project) has been added to the MCHISRS database.

06/27/2022 - An updated version of AERMOD Modeling System (dated 22112) is now available, including new versions of AERMOD, AERMET, and MMIF (v4.0).

See Historical Announcements

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Last updated on August 11, 2022