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题名: Effects of solar proton events on dayglow observed by the TIMED/SABER satellite
作者: Gao, Hong; Xu, Jiyao; Smith, Anne K.; Chen, Guang-Ming
作者部门: 空间科学部
通讯作者: Gao, H (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China.
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN号: 2169-9380
出版日期: 2017
卷号: 122, 期号:7, 页码:7619-7635
收录类别: SCI
项目资助者: National Science Foundation of China [41674152, 41274152, 41331069, 41474131] ; Chinese Academy of Sciences [KZZD-EW-01-2] ; Specialized Research Fund for State Key Laboratories and NSSC Research Fund for key development directions ; U.S. National Science Foundation (NSF)
英文摘要: The effect of solar proton events on the daytime O-2 and OH airglows and ozone and atomic oxygen concentrations in the mesosphere is studied using data from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER). Five events occurred in September 2005, December 2006, March 2012, May 2013, and June 2015 that satisfy two criteria: the maximum proton fluxes are larger than 1000pfu, and daytime data in the high latitude region are available from SABER. The event in December 2006 is studied in detail, and the effects of all five events are compared in brief. The results indicate that all four parameters in the mesosphere decrease during the events. During the event in 2006, the maximum depletions of O-2 and OH dayglow emission rates and ozone and atomic oxygen volume mixing ratios at 70km are respectively 31.6%, 37.0%, 42.4%, and 38.9%. The effect of the solar proton event changes with latitude, longitude, and altitude. The depletions due to the stronger events are larger on average than those due to the weaker events. The depletions of both dayglow emission rates are weaker than those of ozone and atomic oxygen. The responses of O-2 and OH nightglow emissions around their peak altitudes to the SPEs are not as strong and regular as those for dayglow in the mesosphere. Plain Language Summary This paper uses Sounding of the Atmosphere using Broadband Emission Radiometry observations to study the responses of four parameters, O-2 airglow emission at 1.27 m and OH airglow emission at 1.6 m and ozone and atomic oxygen mixing ratios, to solar proton events. The focus is put on the daytime; meanwhile, the results for nighttime are compared with those for daytime in brief. The event in December 2006 is studied in detail as an example. The variations of the responses with latitude, longitude, and altitude are analyzed. Other events are also analyzed in brief. It is the first time that the responses of OH airglow and atomic oxygen to solar proton events are studied. The results indicate that both dayglow and daytime ozone and atomic oxygen in the mesosphere decrease in all solar proton events (SPEs). The SPE affects both O-2 and OH dayglow emissions in the mesosphere strongly, and therefore, they can be used as a tracer of the impacts of the SPE on the atmosphere. This study can make us understand the effects of solar proton event on O-2 and OH airglow emissions and ozone and atomic oxygen further.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5986
Appears in Collections:空间科学部_期刊论文

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