Articles | Volume 18, issue 5
Research article
13 Mar 2018
Research article |  | 13 Mar 2018

Modeling reactive ammonia uptake by secondary organic aerosol in CMAQ: application to the continental US

Shupeng Zhu, Jeremy R. Horne, Julia Montoya-Aguilera, Mallory L. Hinks, Sergey A. Nizkorodov, and Donald Dabdub

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Subject: Aerosols | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Adams, L.: Mechanism for cb6r3_ae6_aq uses the following species,, last access: 15 December 2017. a
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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, 2008. a
Baek, B. H. and Aneja, V. P.: Measurement and analysis of the relationship between ammonia, acid gases, and fine particles in Eastern North Carolina, J. Air Waste Manage. Assoc., 54, 623–633, 2004. a
Short summary
For the first time, the interaction between ammonia and secondary organic aerosol (SOA) is integrated in an air quality model and investigated on a national scale. Our original analysis from simulation results indicates that a significant reduction in gas-phase ammonia is possible due to its uptake onto SOA. Significant impact is also observed in the concentration of particulate matter, with a distinct spatial pattern over different seasons.
Final-revised paper