Energetic Particle Precipitation reflected in the Global Secondary Ozone Distribution

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https://meetingorganizer.copernicus.org/EGU23/EGU23-13908.html

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https://doi.org/10.5194/egusphere-egu23-13908
 http://hdl.handle.net/11603/27228

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Author/Creator ORCID

https://orcid.org/0000-0002-3996-8700
 https://orcid.org/0000-0001-9814-9855

Date

2023-04-03

Type of Work

conference papers and proceedings
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Citation of Original Publication

Jia, Jia, et al. "Energetic Particle Precipitation reflected in the Global Secondary Ozone Distribution" EGU General Assembly 2023, EGU23-13908 (Vienna, Austria & Online, 23–28 April 2023). https://doi.org/10.5194/egusphere-egu23-13908.

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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 has not been well studied. In this research we investigated how the secondary ozone response to EPP from the Microwave Limb Sounder (MLS) and the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the Aura and TIMED satellites, respectively. In addition, the Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension and specified dynamics (SD-WACCMX) was used to characterize the residual circulation during EPP events. By comparing ozone and circulation changes under High- and low-Ap conditions, we report regions of secondary ozone enhancement or deficit across low, mid and high latitudes as a result of circulation and transport changes induced by EPP.