Empirical Orthogonal Function Analysis and Modeling of the Topside Ionospheric and Plasmaspheric TECs

doi:10.1029/2019JA026691

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Empirical Orthogonal Function Analysis and Modeling of the Topside Ionospheric and Plasmaspheric TECs
	Zhong, Jiahao 1; Lei, Jiuhou 1,2; Yue, Xinan 3,4; Wang, Wenbin 5; Burns, Alan G.5; Luan, Xiaoli 1; Dou, Xiankang 1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2019-05-01
卷号	124 期号:5 页码:3681-3698
ISSN号	2169-9380
DOI	10.1029/2019JA026691
英文摘要	The topside total electron contents (TECs) observed by the MetOp-A (above 832 km) and TerraSAR-X (above 520 km) satellites for multiple local times during 2008-2018 have been used to develop global topside ionospheric and plasmaspheric TEC models, based on empirical orthogonal function (EOF) analysis. Gridded TEC maps are first obtained from the original quiet time TECs, and then, they are decomposed into EOF basis modes and associated amplitude coefficients. The EOF analysis well captures the latitudinal, longitudinal, and seasonal variations of the topside ionosphere and plasmasphere, and the associated dependence on solar EUV forcing. The first five EOFs, which can account for more than 98.8% of the total variance, are applied in model construction. The comparison with two empirical models indicates that the EOF TEC models can reproduce the observations well, including TEC magnitudes and longitudinal variations. Moreover, the annual anomaly is obviously seen in the topside TECs. The global averaged TECs are greatest in December and smallest in June. With increasing solar EUV forcing, the global averaged TECs always increase, but the winter hemisphere TECs do not change much and even decrease, especially at night and in the Southern Hemisphere. The overall increasing rate with solar EUV forcing is larger under higher solar activity conditions. The direct plasma diffusion through ionosphere-plasmasphere coupling may not be able to explain some of the features seen in the topside TECs.
资助项目	National Natural Science Foundation of China[41831070] ; National Natural Science Foundation of China[41674154] ; National Natural Science Foundation of China[41874184] ; National Natural Science Foundation of China[41325017] ; National Natural Science Foundation of China[41804150] ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation[2017M622008] ; CAS ; National Science Foundation
WOS关键词	TOTAL ELECTRON-CONTENT ; DENSITY ; SATELLITE ; STORM
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000471601500037
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; CAS ; CAS ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; CAS ; CAS ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; CAS ; CAS ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; CAS ; CAS ; National Science Foundation ; National Science Foundation
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/92505]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Lei, Jiuhou
作者单位	1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei, Anhui, Peoples R China 2.CAS Ctr Excellence Comparat Planetol, Hefei, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 5.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
推荐引用方式 GB/T 7714	Zhong, Jiahao,Lei, Jiuhou,Yue, Xinan,et al. Empirical Orthogonal Function Analysis and Modeling of the Topside Ionospheric and Plasmaspheric TECs[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019,124(5):3681-3698.
APA	Zhong, Jiahao.,Lei, Jiuhou.,Yue, Xinan.,Wang, Wenbin.,Burns, Alan G..,...&Dou, Xiankang.(2019).Empirical Orthogonal Function Analysis and Modeling of the Topside Ionospheric and Plasmaspheric TECs.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,124(5),3681-3698.
MLA	Zhong, Jiahao,et al."Empirical Orthogonal Function Analysis and Modeling of the Topside Ionospheric and Plasmaspheric TECs".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124.5(2019):3681-3698.