Articles | Volume 8, issue 4
https://doi.org/10.5194/gmd-8-957-2015
https://doi.org/10.5194/gmd-8-957-2015
Development and technical paper
 | 
07 Apr 2015
Development and technical paper |  | 07 Apr 2015

Twelve-month, 12 km resolution North American WRF-Chem v3.4 air quality simulation: performance evaluation

C. W. Tessum, J. D. Hill, and J. D. Marshall

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Short summary
We evaluate the predictive performance of a 12-month, 12km horizontal resolution WRF-Chem air quality model simulation for the contiguous United States. Model performance is comparable to other contemporary models used for regulatory and health-effects analysis, with 12% bias for daytime ozone and -1% bias for fine particulate matter (PM2.5). Performance for PM2.5 is worse in winter and in the western U.S. than in other seasons and regions, suggesting opportunities for future model development.