IGGCAS OpenIR  > 地球与行星物理院重点实验室
Transition of Interhemispheric Asymmetry of Equatorial Ionization Anomaly During Solstices
Huang, He1,2,3,4; Lu, Xian4; Liu, Libo1,2,3,5; Wang, Wenbin6; Li, Qiaoling1,2,3,5
2018-12-01
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
卷号123期号:12页码:10283-10300
摘要The magnitudes of the two crests of equatorial ionization anomaly (EIA) vary with local time. During the solstices, EIA crest in the winter hemisphere is larger than that in the summer hemisphere before noon/early afternoon. Whereafter, the crest in the summer hemisphere becomes intensified, and the stronger EIA crest transits to the summer hemisphere. Using Constellation Observing System for Meteorology, Ionosphere, and Climate ionospheric radio occultation data, we examine the longitudinal and altitudinal variations of this interhemispheric transition in four longitudinal sectors and at seven heights under low/high solar activity conditions. The results show that during the June solstice the transition of the stronger EIA peak from the winter to the summer hemisphere is earlier in the sectors where the geomagnetic equator is further away from the subsolar point and the geomagnetic field declination is larger, while during the December solstice the longitudinal variations generally show the opposite compared with that in the June solstice. The distance between the geomagnetic equator and subsolar point and the geomagnetic field configuration control the upward/downward plasma movements in the summer/winter hemisphere, leading to the different transition times in different longitudinal sectors. For both solstices, transition times emerge earlier as height increases, which is mainly caused by the larger effective scale height in the summer hemisphere than in the winter hemisphere, resulting in a smaller electron density difference at higher altitudes with a fast transition. Solar activity alters the transition time below 320 km, whereas it has no evident effect at higher altitudes.
关键词transition time interhemispheric asymmetry of equatorial ionization anomaly longitudinal and altitudinal variation of transition time
DOI10.1029/2018JA026055
资助者NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF ; NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF ; NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF ; NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF
关键词[WOS]F-REGION ; ELECTRON-DENSITY ; IONOSPHERE ; TOPSIDE ; MODEL ; MINIMUM ; LAYER
语种英语
资助项目NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Natural Science Foundation of China[41704157] ; National Natural Science Foundation of China[41774161] ; National Natural Science Foundation of China[41621063] ; China Postdoctoral Science Foundation[2016 M601120] ; NASA[HSR NNX17AG10G] ; NSF[AGS-1343106/1705448] ; NSF[OPP-1543373/1705450] ; NSF[AGS-1753214]
资助者NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF ; NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF ; NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF ; NASA Mission Operations and Data Analysis program ; NASA Mission Operations and Data Analysis program ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; NASA ; NASA ; NSF ; NSF
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000455655700017
出版者AMER GEOPHYSICAL UNION
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90175
专题地球与行星物理院重点实验室
通讯作者Huang, He
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
4.Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
5.Univ Chinese Acad Sci, Beijing, Peoples R China
6.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
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Huang, He,Lu, Xian,Liu, Libo,et al. Transition of Interhemispheric Asymmetry of Equatorial Ionization Anomaly During Solstices[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(12):10283-10300.
APA Huang, He,Lu, Xian,Liu, Libo,Wang, Wenbin,&Li, Qiaoling.(2018).Transition of Interhemispheric Asymmetry of Equatorial Ionization Anomaly During Solstices.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(12),10283-10300.
MLA Huang, He,et al."Transition of Interhemispheric Asymmetry of Equatorial Ionization Anomaly During Solstices".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.12(2018):10283-10300.
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