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Advances in Meteorology
Volume 2017, Article ID 1729454, 7 pages
https://doi.org/10.1155/2017/1729454
Research Article

The Contribution of Geomagnetic Activity to Polar Ozone Changes in the Upper Atmosphere

1Key Laboratory of Space Weather, National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China
2CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China
3Division of Satellite Meteorological Research, National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China

Correspondence should be addressed to Cong Huang; nc.vog.amc@cgnauh

Received 10 March 2017; Revised 11 May 2017; Accepted 23 May 2017; Published 14 June 2017

Academic Editor: Jia Yue

Copyright © 2017 Cong Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Energetic particle precipitation (EPP) has significant impacts on ozone depletion in the polar middle atmosphere during geomagnetic activity. It is well known that solar ultraviolet (UV) radiation plays an important role in ozone generation. Therefore, it is interesting to compare the contributions of EPP and solar UV to ozone changes in the polar upper atmosphere. In this article, we use the annual average index to denote the annual-mean magnitude of the geomagnetic activity, which is closely correlated with the EPP flux, and the annual average index to denote the annual-mean magnitude of the solar radiation, which is somewhat related to the solar UV. We adopt the 5° zonal annual-mean ozone profile dataset to study the statistical characters between the ozone dataset and the , indices. Multiple regression analysis shows that the contributions of geomagnetic activity are not negligible and are of a similar order of magnitude as the solar UV radiation in the polar upper atmosphere (above 10 hPa). The results also show that high-speed solar-wind-stream-induced and coronal-mass-ejection-driven geomagnetic activity is of the same order of magnitude. There are interhemispheric differences according to our multiple regression analysis. We discuss the possible causes of these differences.