Articles | Volume 11, issue 7
Geosci. Model Dev., 11, 2609–2632, 2018
Geosci. Model Dev., 11, 2609–2632, 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 et al.

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Cited articles

Agrawal, H., Welch, W. A., Miller, J. W., and Cocker, D. R.: Emissions Measurements from a Crude Oil Tanker at Sea, Environ. Sci. Technol., 42, 7098–7103,, 2008. a
Anastasopoulos, A. T., Wheeler, A. J., Karman, D., and Kulka, R. H.: Intraurban concentrations, spatial variability, and correlation of ambient polycyclic aromatic hydrocarbons (PAH) and PM2.5, Atmos. Environ., 59, 272–283,, 2012. a, b, c, d
Aulinger, A., Matthias, V., and Quante, M.: Introducing a partitioning mechanism for PAHs into the Community Multiscale Air Quality modeling system and its application to simulating the transport of benzo(a)pyrene over Europe, J. Appl. Meteorol. Clim., 46, 1718–1730,, 2007. a
Baklanov, A., Schlünzen, K., Suppan, P., Baldasano, J., Brunner, D., Aksoyoglu, S., Carmichael, G., Douros, J., Flemming, J., Forkel, R., Galmarini, S., Gauss, M., Grell, G., Hirtl, M., Joffre, S., Jorba, O., Kaas, E., Kaasik, M., Kallos, G., Kong, X., Korsholm, U., Kurganskiy, A., Kushta, J., Lohmann, U., Mahura, A., Manders-Groot, A., Maurizi, A., Moussiopoulos, N., Rao, S. T., Savage, N., Seigneur, C., Sokhi, R. S., Solazzo, E., Solomos, S., Sørensen, B., Tsegas, G., Vignati, E., Vogel, B., and Zhang, Y.: Online coupled regional meteorology chemistry models in Europe: current status and prospects, Atmos. Chem. Phys., 14, 317–398,, 2014. a, b
Bidleman, T.: Atmospheric processes: wet and dry deposition of organic compounds are controlled by their vapor-particle partitioning, Environ. Sci. Technol., 22, 361–367, 1988. a
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.