Articles | Volume 22, issue 14
https://doi.org/10.5194/acp-22-9681-2022
https://doi.org/10.5194/acp-22-9681-2022
Research article
 | 
29 Jul 2022
Research article |  | 29 Jul 2022

The impacts of wildfires on ozone production and boundary layer dynamics in California's Central Valley

Keming Pan and Ian C. Faloona

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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Cited articles

Ainsworth, E.: A. Understanding and improving global crop response to ozone pollution, Plant J., 90, 886–897, https://doi.org/10.1111/tpj.13298, 2017. 
AirNow-Tech: Data Queries, MADIS [data set], https://www.airnowtech.org/data/index.cfm (last access: 3 June 2021), 2020. 
Akagi, S. K., Yokelson, R. J., Burling, I. R., Meinardi, S., Simpson, I., Blake, D. R., McMeeking, G. R., Sullivan, A., Lee, T., Kreidenweis, S., Urbanski, S., Reardon, J., Griffith, D. W. T., Johnson, T. J., and Weise, D. R.: Measurements of reactive trace gases and variable O3 formation rates in some South Carolina biomass burning plumes, Atmos. Chem. Phys., 13, 1141–1165, https://doi.org/10.5194/acp-13-1141-2013, 2013. 
Baker, K. R., Woody, M. C., Valin, L., Szykman, J., Yates, E. L., Iraci, L. T., Choi, H. D., Soja, A. J., Koplitz, S. N., Zhou, L. Campuzano-Jost, P. Jimenez, J. L., and Hair, J. W.: Photochemical model evaluation of 2013 California wild fire air quality impacts using surface, aircraft, and satellite data, Sci. Total Environ., 637, 1137–1149, https://doi.org/10.1016/j.scitotenv.2018.05.048, 2018. 
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Short summary
This work represents a unique analysis of 10 existing air quality network sites and meteorological sites, two AmeriFlux sites, and a radio acoustic sounding system in the Central Valley of California during five consecutive fire seasons, June through September, from 2016 to 2020. We find that the ozone production rate increases by ~ 50 % during wildfire influenced periods. Wildfire smoke also decreases the heat flux by 30 % and results in 12 % lower mixed-layer height.
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