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
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume123Issue:12Pages:10283-10300
AbstractThe 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.
Keywordtransition time interhemispheric asymmetry of equatorial ionization anomaly longitudinal and altitudinal variation of transition time
DOI10.1029/2018JA026055
Funding OrganizationNASA 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 KeywordF-REGION ; ELECTRON-DENSITY ; IONOSPHERE ; TOPSIDE ; MODEL ; MINIMUM ; LAYER
Language英语
Funding ProjectNASA 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]
Funding OrganizationNASA 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000455655700017
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90175
Collection地球与行星物理院重点实验室
Corresponding AuthorHuang, He
Affiliation1.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
Recommended Citation
GB/T 7714
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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