Communications Earth & Environment (May 2024)

Energetic particle precipitation influences global secondary ozone distribution

  • 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,
  • Jiarong Zhang

DOI
https://doi.org/10.1038/s43247-024-01419-2
Journal volume & issue
Vol. 5, no. 1
pp. 1 – 11

Abstract

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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.