SMuK 2023 – scientific programme
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EP: Fachverband Extraterrestrische Physik
EP 11: Near-Earth Space I
EP 11.1: Invited Talk
Thursday, March 23, 2023, 14:00–14:30, ZEU/0160
Energetic Particle Precipitation reflected in the Global Secondary Ozone Distribution — •Jia Jia1,2, Lisa E. Murberg1,3, Tiril Løvset1, Yvan J. Orsolini1,3, Patrick J. Espy1,2, Jude Salinas4,5, Jae N. Lee4,5, Dong Wu4, and Jiarong Zhang6 — 1Norwegian University of Science and Technology (NTNU), Trondheim, Norway — 2Birkeland Centre for Space Science (BCSS), Norway — 3NILU - Norwegian Institute for Air Research, Kjeller, Norway — 4NASA Goddard Space Flight Center, Greenbelt, Maryland, USA — 5University of Maryland, Baltimore County, Maryland, USA — 6Coastal Carolina University, Conway, South Carolina, USA
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-WACCM-X) 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.