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

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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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