Articles | Volume 23, issue 16
https://doi.org/10.5194/acp-23-9173-2023
https://doi.org/10.5194/acp-23-9173-2023
Research article
 | 
21 Aug 2023
Research article |  | 21 Aug 2023

Sensitivity of northeastern US surface ozone predictions to the representation of atmospheric chemistry in the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMMv1.0)

Bryan K. Place, William T. Hutzell, K. Wyat Appel, Sara Farrell, Lukas Valin, Benjamin N. Murphy, Karl M. Seltzer, Golam Sarwar, Christine Allen, Ivan R. Piletic, Emma L. D'Ambro, Emily Saunders, Heather Simon, Ana Torres-Vasquez, Jonathan Pleim, Rebecca H. Schwantes, Matthew M. Coggon, Lu Xu, William R. Stockwell, and Havala O. T. Pye

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Cited articles

Aneja, V. P., Businger, S., Li, Z., Claiborn, C. S., and Murthy, A.: Ozone Climatology at High Elevations in the Southern Appalachians, J. Geophys. Res.-Atmos., 96, 1007–1021, https://doi.org/10.1029/90jd02022, 1991. 
Appel, K. W. and Gilliam, R.: USEPA/AMET: AMETv1.5, Zenodo [code], https://doi.org/10.5281/zenodo.8156171 (last access: 9 August 2023), 2023. 
Appel, K. W., Gilliam, R. C., Davis, N., Zubrow, A., and Howard, S. C.: Overview of the atmospheric model evaluation tool (AMET) v1.1 for evaluating meteorological and air quality models, Environ. Modell. Softw., 26, 434–443, https://doi.org/10.1016/j.envsoft.2010.09.007, 2011. 
Arnold, J. R., Dennis, R. L., and Tonnesen, G. S.: Diagnostic evaluation of numerical air quality models with specialized ambient observations: testing the Community Multiscale Air Quality modeling system (CMAQ) at selected SOS 95 ground sites, Atmos. Environ., 37, 1185–1198, https://doi.org/10.1016/S1352-2310(02)01008-7, 2003. 
Short summary
Ground-level ozone is a pollutant with adverse human health and ecosystem effects. Air quality models allow scientists to understand the chemical production of ozone and demonstrate impacts of air quality management plans. In this work, the role of multiple systems in ozone production was investigated for the northeastern US in summer. Model updates to chemical reaction rates and monoterpene chemistry were most influential in decreasing predicted ozone and improving agreement with observations.
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