Energetic particle precipitation influences global secondary ozone distribution
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Jia, Jia, Lise E. Murberg, Tiril Løvset, Yvan J. Orsolini, Patrick J. Espy, Lilou C. G. Zeller, Cornelius Csar Jude H. Salinas, Jae N. Lee, Dong Wu, and Jiarong Zhang. “Energetic Particle Precipitation Influences Global Secondary Ozone Distribution.” Communications Earth & Environment 5, no. 1 (May 20, 2024): 1–11. https://doi.org/10.1038/s43247-024-01419-2.
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract
The secondary ozone layer is a global peak in ozone abundance in the upper mesosphere-lower thermosphere (UMLT) around 90-95?km. The effect of energetic particle precipitation (EPP) from geomagnetic processes on this UMLT ozone remains largely unexplored. In this research we investigated how the secondary ozone responds to EPP using satellite observations. In addition, the residual Mean Meridional Circulation (MMC) derived from model simulations and the atomic oxygen [O], atomic hydrogen [H], temperature measurements from satellite observations were used to characterise the residual circulation changes during EPP events. We report regions of secondary ozone enhancement or deficit across low, mid and high latitudes as a result of global circulation and transport changes induced by EPP. The results are supported by a sensitivity test using an empirical model.