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

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

doi:https://doi.org/10.5194/gmd-11-2609-2018

Articles | Volume 11, issue 7

https://doi.org/10.5194/gmd-11-2609-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-11-2609-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 7

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

Supplement

https://doi.org/10.5194/gmd-11-2609-2018-supplement

Model code and software

gemdyn and rpnphy repositories Canadian Meteorological Centre https://github.com/mfvalin?tab=repositories

GEM-MACH-PAH, rev2488 C. Whaley, E. Galarneau, P. A. Makar, M. D. Moran, C. Stroud, W. Gong, and S. Gravel https://doi.org/10.5281/zenodo.1162252

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.