Articles | Volume 22, issue 23
https://doi.org/10.5194/acp-22-15449-2022
https://doi.org/10.5194/acp-22-15449-2022
Research article
 | 
07 Dec 2022
Research article |  | 07 Dec 2022

Observation-based constraints on modeled aerosol surface area: implications for heterogeneous chemistry

Rachel A. Bergin, Monica Harkey, Alicia Hoffman, Richard H. Moore, Bruce Anderson, Andreas Beyersdorf, Luke Ziemba, Lee Thornhill, Edward Winstead, Tracey Holloway, and Timothy H. Bertram

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Cited articles

Abbatt, J. P. D., Lee, A. K. Y., and Thornton, J. A.: Quantifying trace gas uptake to tropospheric aerosol: recent advances and remaining challenges, Chem. Soc. Rev., 41, 6555–6581, https://doi.org/10.1039/c2cs35052a, 2012. 
Abel, D. W., Holloway, T., Harkey, M., Meier, P., Ahl, D., Limaye, V. S., and Patz, J. A.: Air-quality-related health impacts from climate change and from adaptation of cooling demand for buildings in the eastern United States: An interdisciplinary modeling study, PLoS Med., 15, 1–27, https://doi.org/10.1371/journal.pmed.1002599, 2018. 
Abel, D. W., Holloway, T., Martínez-Santos, J., Harkey, M., Tao, M., Kubes, C., and Hayes, S.: Air Quality-Related Health Benefits of Energy Efficiency in the United States, Environ. Sci. Technol., 53, 3987–3998, https://doi.org/10.1021/acs.est.8b06417, 2019. 
Adams, P. J. and Seinfeld, J. H.: Predicting global aerosol size distributions in general circulation models, J. Geophys. Res.-Atmos., 107(19), AAC 4-1-AAC 4-23, https://doi.org/10.1029/2001JD001010, 2002. 
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Correctly predicting aerosol surface area concentrations is important for determining the rate of heterogeneous reactions in chemical transport models. Here, we compare aircraft measurements of aerosol surface area with a regional model. In polluted air masses, we show that the model underpredicts aerosol surface area by a factor of 2. Despite this disagreement, the representation of heterogeneous chemistry still dominates the overall uncertainty in the loss rate of molecules such as N2O5.
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