Japan Geoscience Union Meeting 2021

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P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM08] Space Weather and Space Climate

Sat. Jun 5, 2021 5:15 PM - 6:30 PM Ch.03

convener:Ryuho Kataoka(National Institute of Polar Research), A Antti Pulkkinen(NASA Goddard Space Flight Center), Kanya Kusano(Institute for Space-Earth Environmental Research, Nagoya University), Kaori Sakaguchi(National Institute of Information and Communications Technology)

5:15 PM - 6:30 PM

[PEM08-P28] The relevance between cosmic ray and ozone depletion

*Kazuyoshi Yamashita1 (1.The Open University of Japan)

Keywords:AEindex, cosmic ray, ozone

In the upper atmosphere, ozone is thought to be destroyed by NOx produced by galactic cosmic rays and solar cosmic rays.In order to clarify the decrease in total ozone with increasing NOx, a correlation map between AEindex and total ozone was created. The results showed that total ozone increased with increasing AEindex at low latitudes in the Northern Hemisphere.This suggests that the decrease in total ozone due to the increase in NOx is due more to galactic cosmic rays than to solar cosmic rays.