edu.ucar.opensky::articles:24923 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T22:57:03.189893 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d75m696k Ozone chemistry in western U.S. wildfire plumes 2021-12-10T00:00:00Z publication https://n2t.org/ark:/85065/d75m696k https://doi.org/10.1126/sciadv.abl3648 Xu, L. author Crounse, J. D. author Vasquez, K. T. author Allen, H. author Wennberg, P. O. author Bourgeois, I. author Brown, S. S. author Campuzano-Jost, P. author Coggon, M. M. author Crawford, J. H. author DiGangi, J. P. author Diskin, G. S. author Fried, A. author Gargulinski, E. M. author Gilman, J. B. author Gkatzelis, G. I. author Guo, H. author Hair, J. W. author Hall, Samuel R. author Halliday, H. A. author Hanisco, T. F. author Hannun, R. A. author Holmes, C. D. author Huey, L. G. author Jimenez, J. L. author Lamplugh, A. author Lee, Y. R. author Liao, J. author Lindaas, J. author Neuman, J. A. author Nowak, J. B. author Peischl, J. author Peterson, D. A. author Piel, F. author Richter, D. author Rickly, P. S. author Robinson, M. A. author Rollins, A. W. author Ryerson, T. B. author Sekimoto, K. author Selimovic, V. author Shingler, T. author Soja, A. J. author St. Clair, J. M. author Tanner, D. J. author Ullmann, Kirk author Veres, P. R. author Walega, J. author Warneke, C. author Washenfelder, R. A. author Weibring, P. author Wisthaler, A. author Wolfe, G. M. author Womack, C. C. author Yokelson, R. J. author UCAR/NCAR - Library publisher Wildfires are a substantial but poorly quantified source of tropospheric ozone (O-3). Here, to investigate the highly variable O-3 chemistry in wildfire plumes, we exploit the in situ chemical characterization of western wildfires during the FIREX-AQ flight campaign and show that O-3 production can be predicted as a function of experimentally constrained OH exposure, volatile organic compound (VOC) reactivity, and the fate of peroxy radicals. The O-3 chemistry exhibits rapid transition in chemical regimes. Within a few daylight hours, the O-3 formation substantially slows and is largely limited by the abundance of nitrogen oxides (NOx). This finding supports previous observations that O-3 formation is enhanced when VOC-rich wildfire smoke mixes into NOx-rich urban plumes, thereby deteriorating urban air quality. Last, we relate O-3 chemistry to the underlying fire characteristics, enabling a more accurate representation of wildfire chemistry in atmospheric models that are used to study air quality and predict climate. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation