You are here:
A Hemispheric Version of the Community Multiscale Air Quality (CMAQ) Modeling System
Citation:
Mathur, R., J. Xing, C. Hogrefe, G. Sarwar, D. Kang, AND S. Napelenok. A Hemispheric Version of the Community Multiscale Air Quality (CMAQ) Modeling System. 2017 Western Modeling Workshop, Boullder, CO, September 06 - 08, 2017.
Impact/Purpose:
Implementing the National Ambient Air Quality Standards (NAAQS) requires the use of regional air quality models that consider the contribution from different sources of pollutants and their precursors. With stricter NAAQS, contributions from outside of the continental U.S. need to be simulated with greater rigor. This presentation discusses the development and application of a hemispheric version of the Community Multiscale Air Quality (CMAQ) modeling system that accounts for the sources of “background” pollution, such as that from oceans, upper troposphere/lower stratosphere, and cross-hemispheric transport from Asia. This new modeling system will likely be of particular value to states/regions in designing State Implementation Plans (SIPs) and to OAQPS for developing national emission control strategies to attain the NAAQS for ozone and fine particulate matter
Description:
This invited presentation will be given at the 4th Biannual Western Modeling Workshop in the Plenary session on Global model development, evaluation, and new source attribution tools. We describe the development and application of the hemispheric version of the CMAQ to examine the influence of long-range pollutant transport on trends in surface level O3 distributions.