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THE 2006 CMAQ RELEASE AND PLANS FOR 2007
Citation:
PLEIM, J. E., S. J. ROSELLE, P. BHAVE, R. BULLOCK, W. T. HUTZELL, D. J. LUECKEN, C. G. NOLTE, K. L. SCHERE, J. O. YOUNG, J. M. GODOWITCH, AND W. APPEL. THE 2006 CMAQ RELEASE AND PLANS FOR 2007. Presented at 5rh Annual CMAS Models-3 User's Conference, Chapel Hill, NC, October 16 - 18, 2006.
Impact/Purpose:
The objectives of this task are to continue development and improvement of EPA's mesoscale (regional through urban scale) air quality modeling systems, such as the Community Multiscale Air Quality (CMAQ) model, as air quality management and NAAQS implementation tools. This task focuses on needed research and development of air quality models targeted for a major CMAQ model release in FY08. Model development for a broad scope of application is envisioned. For example, CMAQ will need to be able to simulate air quality feedbacks to meteorology and climate as well as intercontinental transport. The 2008 release of CMAQ is timed to coincide with EPA/OAR's and the states' needs for an improved model for assessments of progress (mid-course corrections) in the post-SIP submittal timeframe.
Description:
The 2006 release of the Community Multiscale Air Quality (CMAQ) model (Version 4.6) includes upgrades to several model components as well as new modules for gas-phase chemistry and boundary layer mixing. Capabilities for simulation of hazardous air pollutants have been expanded to include more gas-phase toxics and several toxic metals. The mercury model has been updated and adapted to the new version of CMAQ. The CMAQ analysis tools, sulfur tracking and carbon source apportionment, have also been updated to operate with new physics, chemistry, and aerosol components.