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  4. 中国科学院地球与行星物理重点实验室
A Case Study of the Enhancements in Ionospheric Electron Density and Its Longitudinal Gradient at Chinese Low Latitudes

文献类型：期刊论文

作者Liu, Libo1,3,4,5; Ding, Zonghua2; Zhang, Ruilong1; Chen, Yiding1,3,4; Le, Huijun1,3,4; Zhang, Hui1,3,4; Li, Guozhu1,3,4,5; Wu, Jian2; Wan, Weixing1,3,4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2020-05-01
卷号125期号:5页码:9
关键词ionosphere low latitude GNSS total electron content day-to-day variability equatorial ionization anomaly
ISSN号2169-9380
DOI10.1029/2019JA027751
英文摘要The day-to-day variability of the ionospheric electron density and its longitudinal gradient challenges our description and understanding of the ionosphere, which is also essential for reliable applications of the Global Navigation Satellite System (GNSS). In this paper we conduct a case study of the anomalous enhancements in ionospheric electron density and its longitudinal gradient to reveal the spatial extent and related drivers of the enhancements. The ionospheric data analyzed include the vertical total electron content (TEC) by the Global Navigation Satellite System receivers, peak electron density (NmF2) and height (hmF2) of the F layer by a chain of ionosondes, and electron density profiles recorded by the Qujing incoherent scatter radar (103.8 degrees E, 25.6 degrees N) during the period from 29 May to 2 June 2015. Electron density enhancements are found in the region around the northern crest of equatorial ionization anomaly on the first 2 days of June 2015. It is the first time to report that, during the anomalous enhancement, the increase in electron density over Qujing depends on altitude, being stronger at higher altitudes. Further, there are strong longitudinal gradients in vertical TEC in the regions during the course of the electron density enhancements. Low latitude hmF2 and especially the equatorial electrojet become much larger on the enhancement days, implying the important role of equatorial zonal electric fields in the formation of the electron density enhancements at low latitudes. Key Points Electron density enhances strongly in the ionospheric F region at Chinese low latitude close to the equatorial anomaly crest Increase in electron density depends on altitude, being stronger at higher altitudes A strong longitudinal gradient and zonal electric field is accompanying with the enhancement in electron density
WOS关键词DISTURBANCES ; REGION ; MECHANISM ; DELAY
资助项目NASA ; AFOSR ; National Key Research and Development Program[2017YFE0131400] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundation of China[41774161] ; National Natural Science Foundation of China[41904140] ; National Key Basic Research Program of China[2012CB825604] ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Meridian Project of China ; NSF
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000540229100048
出版者AMER GEOPHYSICAL UNION
资助机构NASA ; NASA ; NASA ; NASA ; AFOSR ; AFOSR ; AFOSR ; AFOSR ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; NSF ; NSF ; NSF ; NSF ; NASA ; NASA ; NASA ; NASA ; AFOSR ; AFOSR ; AFOSR ; AFOSR ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; NSF ; NSF ; NSF ; NSF ; NASA ; NASA ; NASA ; NASA ; AFOSR ; AFOSR ; AFOSR ; AFOSR ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; NSF ; NSF ; NSF ; NSF ; NASA ; NASA ; NASA ; NASA ; AFOSR ; AFOSR ; AFOSR ; AFOSR ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; Meridian Project of China ; NSF ; NSF ; NSF ; NSF
源URL[http://ir.iggcas.ac.cn/handle/132A11/96896]  
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Liu, Libo
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.China Res Inst Radiowave Propagat, Qingdao, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Libo,Ding, Zonghua,Zhang, Ruilong,et al. A Case Study of the Enhancements in Ionospheric Electron Density and Its Longitudinal Gradient at Chinese Low Latitudes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2020,125(5):9.
APA Liu, Libo.,Ding, Zonghua.,Zhang, Ruilong.,Chen, Yiding.,Le, Huijun.,...&Wan, Weixing.(2020).A Case Study of the Enhancements in Ionospheric Electron Density and Its Longitudinal Gradient at Chinese Low Latitudes.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,125(5),9.
MLA Liu, Libo,et al."A Case Study of the Enhancements in Ionospheric Electron Density and Its Longitudinal Gradient at Chinese Low Latitudes".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125.5(2020):9.

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来源：地质与地球物理研究所

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