Articles | Volume 11, issue 7
https://doi.org/10.5194/gmd-11-2609-2018
https://doi.org/10.5194/gmd-11-2609-2018
Development and technical paper
 | 
06 Jul 2018
Development and technical paper |  | 06 Jul 2018

GEM-MACH-PAH (rev2488): a new high-resolution chemical transport model for North American polycyclic aromatic hydrocarbons and benzene

Cynthia H. Whaley, Elisabeth Galarneau, Paul A. Makar, Ayodeji Akingunola, Wanmin Gong, Sylvie Gravel, Michael D. Moran, Craig Stroud, Junhua Zhang, and Qiong Zheng

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AR by Cynthia Whaley on behalf of the Authors (21 Jun 2018)  Author's response    Manuscript
ED: Publish as is (27 Jun 2018) by Astrid Kerkweg
AR by Cynthia Whaley on behalf of the Authors (27 Jun 2018)  Author's response    Manuscript
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Short summary
We present a new, high-resolution, North American model of PAHs and benzene, which are toxic air pollutants that cause a variety of negative health impacts. Our simulation in a densely populated region of Canada and the U.S. shows that the model is improved over a previous model. The new model is particularly refined regarding the gas–particle partitioning of these pollutants, which has impacts on deposition and inhalation. The simulation was sensitive to the selection of vehicle emissions.