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Efficiency of solar wind energy coupling to the ionosphere
Guo, Jianpeng; Feng, Xueshang; Emery, Barbara A.; Wang, Yi; Guo, JP (reprint author), Chinese Acad Sci, State Key Lab Space Weather, CSSAR, SIGMA Weather Grp, Beijing 100190, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2012
Volume117Pages:A07303
ISSN0148-0227
Language英语
AbstractWe present a statistical investigation into the variations of the ionospheric energy coupling efficiencies with the solar wind energy input, the interplanetary magnetic field (IMF) clock angle and the solar wind dynamic pressure. The ionospheric energy coupling efficiencies are defined as the ratios of the ionospheric energy deposition (namely auroral precipitation, Joule heating, and their total) to the solar wind energy input. We find that the ionospheric energy coupling efficiencies decrease exponentially with the solar wind energy input. Moreover, it is the same case under geomagnetic storm conditions. Our results also show that the energy coupling efficiencies are dependent on the IMF clock angle and almost independent of the solar wind dynamic pressure. These results will help us estimate and predict energy transfer from the solar wind to the thermosphere-ionosphere system under extreme space weather conditions, particularly severe geomagnetic storms.; We present a statistical investigation into the variations of the ionospheric energy coupling efficiencies with the solar wind energy input, the interplanetary magnetic field (IMF) clock angle and the solar wind dynamic pressure. The ionospheric energy coupling efficiencies are defined as the ratios of the ionospheric energy deposition (namely auroral precipitation, Joule heating, and their total) to the solar wind energy input. We find that the ionospheric energy coupling efficiencies decrease exponentially with the solar wind energy input. Moreover, it is the same case under geomagnetic storm conditions. Our results also show that the energy coupling efficiencies are dependent on the IMF clock angle and almost independent of the solar wind dynamic pressure. These results will help us estimate and predict energy transfer from the solar wind to the thermosphere-ionosphere system under extreme space weather conditions, particularly severe geomagnetic storms.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3274
Collection空间科学部
Corresponding AuthorGuo, JP (reprint author), Chinese Acad Sci, State Key Lab Space Weather, CSSAR, SIGMA Weather Grp, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Guo, Jianpeng,Feng, Xueshang,Emery, Barbara A.,et al. Efficiency of solar wind energy coupling to the ionosphere[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2012,117:A07303.
APA Guo, Jianpeng,Feng, Xueshang,Emery, Barbara A.,Wang, Yi,&Guo, JP .(2012).Efficiency of solar wind energy coupling to the ionosphere.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,117,A07303.
MLA Guo, Jianpeng,et al."Efficiency of solar wind energy coupling to the ionosphere".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117(2012):A07303.
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