Community Multiscale Air Quality Model (http://www.cmaq-model.org)
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 (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 archive is organized with each official public release stored as a branch on the main CMASCenter/CMAQ repository. To check out code from the CMAQ Git archive, specify the branch (i.e. version number) and issue the following command from within a working directory on your server:
git clone -b 5.1 https://github.com/CMASCenter/CMAQ.git
This command shows how to check out CMAQ v5.1 codes and scripts.
The release versions of CMAQ that are currently available on Git Hub include:
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.