Articles | Volume 8, issue 9
Geosci. Model Dev., 8, 2877–2892, 2015
https://doi.org/10.5194/gmd-8-2877-2015
Geosci. Model Dev., 8, 2877–2892, 2015
https://doi.org/10.5194/gmd-8-2877-2015

Development and technical paper 15 Sep 2015

Development and technical paper | 15 Sep 2015

Evaluation of the Community Multiscale Air Quality (CMAQ) model v5.0 against size-resolved measurements of inorganic particle composition across sites in North America

C. G. Nolte et al.

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Cited articles

Allen, D. J., Pickering, K. E., Pinder, R. W., Henderson, B. H., Appel, K. W., and Prados, A.: Impact of lightning-NO on eastern United States photochemistry during the summer of 2006 as determined using the CMAQ model, Atmos. Chem. Phys., 12, 1737–1758, https://doi.org/10.5194/acp-12-1737-2012, 2012.
Appel, K. W., Bhave, P. V., Gilliland, A. B., Sarwar, G., and Roselle, S. J.: Evaluation of the Community Multiscale Air Quality (CMAQ) model version 4.5: sensitivities impacting model performance; Part II – Particulate matter, Atmos. Environ., 42, 6057–6066, https://doi.org/10.1016/j.atmosenv.2008.03.036, 2008.
Appel, K. W., Pouliot, G. A., Simon, H., Sarwar, G., Pye, H. O. T., Napelenok, S. L., Akhtar, F., and Roselle, S. J.: Evaluation of dust and trace metal estimates from the Community Multiscale Air Quality (CMAQ) model version 5.0, Geosci. Model Dev., 6, 883–899, https://doi.org/10.5194/gmd-6-883-2013, 2013.
Asgharian, B., Hofmann, W., and Bergmann, R.: Particle deposition in a multiple-path model of the human lung, Aerosol Sci. Technol., 34, 332–339, 2001.
Baker, K. R. and Foley, K. M.: A nonlinear regression model estimating single source concentrations of primary and secondarily formed PM2.5, Atmos. Environ., 45, 3758–3767, https://doi.org/10.1016/j.atmosenv.2011.03.074, 2011.
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Short summary
This study is the most comprehensive evaluation of CMAQ inorganic aerosol size-composition distributions conducted to date. We compare two methods of inferring PM2.5 concentrations from the model: (1) based on the sum of the masses in the fine aerosol modes, as is most commonly done in CMAQ model evaluation; and (2) computed using the simulated size distributions. Differences are generally less than 1 microgram/m3, and are largest over the eastern USA during the summer.