- Bug Fixes in CMAQv5.0
- CB05 with updated toluene chemistry
- Addition of SAPRC-07 mechanism option
- Updates to the in-line photolysis module
- CCTM cloud module was updated to simulate subgrid clouds only when the meteorological driver uses a convective cloud parameterization
- Default read of C-staggered wind components from MET_DOT_3D
- Corrected component-wise shear to properly use B-staggered winds
- Modified eddy diffusivity for stable conditions
- Reduced the minimum eddy diffusivity from 0.5 m2/s to 0.01 m2/s, and from 2.0 m2/s to 1.0 m2/s for urban areas
- A new method for computing the vertical velocity has been implemented that follows the omega calculation in WRF but uses CMAQ's advection schemes (PPM) to compute horizontal mass divergence
- Simulated aerosols from CCTM provide direct feedback to the WRF radiation calculations
CMAQ 5.0.1 Released
CMAQv5.0.1 includes several bug fixes to CMAQv5.0 and a new two-way coupled WRF-CMAQ model. See the Release Notes for a complete description of this release.
CMAQv4.7.1 (June 2010)
CMAQv4.7.1 includes several updates to the model infrastructure and science algorithms. Important new features include diagnostic tools, such as DDM, sulfate tracking, and primary carbon apportionment. See the Release Notes for a complete description of this release.
NERL releases CMAQ article (November 2009)
The EPA National Exposure Research Lab (NERL) released a feature article on CMAQ on their website in November 2009. The article highlights the advances made by EPA in using CMAQ to study air quality.
Beta version of CMAQ v4.7.1 Operational Guidance Document (OGD) Now Available
The first ever Operational
Guidance Document for CMAQ is now available in HTML and PDF formats. Changes are still being made daily to this document, so please consider it as a beta version. We welcome any feedback you have about the CMAQ OGD. Please direct feedback to email@example.com.
MCIPv3.6 (March, 2010)
MCIPv3.6 encompasses all changes since the last official release of MCIP (version 3.4.1). Users are encouraged to update to this version of MCIP, particularly for WRF-based applications. See the Release Notes for a complete description of this release.
CMAQ Training in Sofia, Bulgaria
CMAS trainers traveled to Sofia, Bulgaria in August
2006 to teach CMAQ to modelers from government and university
groups around Europe. Sponsored by the ACCENT
initiative, the special workshop was attended by over
30 scientists and included tutorials on SMOKE
ACCENT-CMAS August 2006 CMAQ class