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Global ionospheric scintillations revealed by GPS radio occultation data with FY3C satellite before midnight during the March 2015 storm
Wang, Guojun1,3,4; Shi, Jiankui1,4; Bai, Weihua2,4; Galkin, Ivan3; Wang, Zeng1; Sun, Yueqian2,4
作者部门空间科学部
发表期刊Advances in Space Research
2019
DOI10.1016/j.asr.2019.01.028
ISSN0273-1177
语种英语
关键词FengYun 3C satellite Radio occultation Ionospheric scintillations Geomagnetic storm
摘要Global observations of S4 amplitude scintillation index by the GPS Occultation Sounder (GNOS) on FengYun-3 C (FY3C) satellite reveal global dynamic patterns of a strong pre-midnight scintillations in F-region of the ionosphere during the St. Patrick's Day geomagnetic super storm of 17–19 March 2015. The observed strong scintillations mainly occurred in the low latitudes, caused by equatorial plasma bubbles. During the main storm phase (March 17), the scintillations were first triggered in the New Zealand sector near 160°E longitudes, extending beyond 40°S dip latitude. They were also enhanced in the Indian sector, but significantly suppressed in East Asia near 120°E longitude and in Africa around 30°E longitude. During the initial recovery phase (March 18–19), the global scintillations were seldom observed in GNOS data. During the later recovery phase (after March 19), the scintillations recovered to the pre-storm level in Indian, African, and American sectors, but not in East Asian and any of Pacific sectors. These results closely correlate with observations of the density depletion structures by the Communication/Navigation Outage Forecasting System (C/NOFS) satellite, and ground-based instruments. Such consistency indicates reliability of our scintillation sensing approach even in a case-by-case comparison study. The prompt penetration electric field and disturbance dynamo electric field are suggested as the main factors that control the enhancement and inhibition of the scintillations during the storm, respectively. © 2019 COSPAR
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文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6946
专题空间科学部
作者单位1.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
2.Beijing Key Laboratory of Space Environment, National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
3.Space Science Laboratory, University of Massachusetts Lowell, MA; 01854, United States;
4.University of Chinese Academy of Sciences, Beijing; 100049, China
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Wang, Guojun,Shi, Jiankui,Bai, Weihua,et al. Global ionospheric scintillations revealed by GPS radio occultation data with FY3C satellite before midnight during the March 2015 storm[J]. Advances in Space Research,2019.
APA Wang, Guojun,Shi, Jiankui,Bai, Weihua,Galkin, Ivan,Wang, Zeng,&Sun, Yueqian.(2019).Global ionospheric scintillations revealed by GPS radio occultation data with FY3C satellite before midnight during the March 2015 storm.Advances in Space Research.
MLA Wang, Guojun,et al."Global ionospheric scintillations revealed by GPS radio occultation data with FY3C satellite before midnight during the March 2015 storm".Advances in Space Research (2019).
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