Community Multiscale Air Quality Model US EPA Website
CMAQ is an active open-source development project of the U.S. EPA Computational Exposure Division that consists of a suite of programs for conducting air quality model simulations. CMAQ is supported by the CMAS Center (http://www.cmascenter.org).
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 CMAQ Git repository is organized with each official public release stored as a branch on the public GitHub USEPA CMAQ repository. To clone code from the CMAQ Git repository, specify the branch (i.e. version number) and issue the following command from within a working directory on your server. For example, to get the 5.2Beta version in a local repository that you've named CMAQ_v5.2Beta:
git clone -b 5.2Beta https://github.com/USEPA/CMAQ.git CMAQ_v5.2Beta
The release versions of CMAQ that are currently available on Git Hub include:
- v5.2Beta (October 2016)
- v5.1 (December 2015)
- v5.0.2 (April 2014)
- v5.0.1 (July 2012)
- v5.0 (February 2012)
- v4.7.1 (June 2010)
Benchmark/tutorial input and output data for each CMAQ release version are available from the CMAS Center Software Clearinghouse. From http://www.cmascenter.org, select Download -> Software -> CMAQ and choose the version to get the tutorial data.