Community Multiscale Air Quality Model version 5.1 (November 2015)

CMAQ is an active open-source development project of the U.S. EPA Atmospheric Science Modeling Division that consists of a suite of programs for conducting air quality model simulations. CMAQ is supported and distributed by the CMAS Center.

CMAQ combines current knowledge in atmospheric science and air quality modeling with multi-processor computing techniques in an open-source framework to deliver fast, technically sound estimates of ozone, particulates, toxics, and acid deposition.

The Community Multiscale Air Quality (CMAQ) Model version 5.1 is major update to CMAQ that includes several changes to the science algorithms in the base model. CMAQ v5.1 was developed by the U.S. EPA with contributions from other research partners. CMAQv5.1 builds upon the beta version made available to the modeling community in April 2015 by the U.S. EPA. Release notes provided below summarize the main enhancements to the modeling system since the previous release, CMAQ v5.0.2.

CMAQv5.1 Release notes: https://www.airqualitymodeling.org/index.php/CMAQ_version_5.1_%28November_2015_release%29_Technical_Documentation

Additional documentation available at http:https://www.epa.gov/cmaq