Prediction of the thermospheric and ionospheric responses to the 21 June 2020 annular solar eclipse
Prediction of the thermospheric and ionospheric responses to the 21 June 2020 annular solar eclipse
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2020 年 6 月 21 日日环食的热层和电离层响应预测
DOI:
10.26464/epp2020032
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发表时间:
2020-05
影响因子:
2.9
通讯作者:
Huang Fuqing
中科院分区:
文献类型:
--
作者:
Dang Tong;Lei Jiuhou;Wang Wenbin;Yan Maodong;Ren Dexin;Huang Fuqing
On 21 June 2020, an annular solar eclipse will traverse the low latitudes from Africa to Southeast Asia. The highest latitude of the maximum eclipse obscuration is approximately 30°. This low-latitude solar eclipse provides a unique and unprecedented opportunity to explore the impact of the eclipse on the low-latitude ionosphere–thermosphere (I–T) system, especially in the equatorial ionization anomaly region. In this study, we describe a quantitative prediction of the impact of this upcoming solar eclipse on the I–T system by using Thermosphere–Ionosphere–Electrodynamics General Circulation Model simulations. A prominent total electron content (TEC) enhancement of around 2 TEC units occurs in the equatorial ionization anomaly region even when this region is still in the shadow of the eclipse. This TEC enhancement lasts for nearly 4.5 hours, long after the solar eclipse has ended. Further model control simulations indicate that the TEC increase is mainly caused by the eclipse-induced transequatorial plasma transport associated with northward neutral wind perturbations, which result from eclipse-induced pressure gradient changes. The results illustrate that the effect of the solar eclipse on the I–T system is not transient and linear but should be considered a dynamically and energetically coupled system.
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影响因子:
5.2
作者:
Yang‐Yi Sun;Jann‐Yenq Liu;C. Lin;Chi‐Yen Lin;M. Shen;Chieh‐Hung Chen;Chia‐Hung Chen;M. Chou
通讯作者:
Yang‐Yi Sun;Jann‐Yenq Liu;C. Lin;Chi‐Yen Lin;M. Shen;Chieh‐Hung Chen;Chia‐Hung Chen;M. Chou
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DOI:
10.1029/2018ja025479
发表时间:
2019-04
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
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作者:
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通讯作者:
Wenbin Wang;Tong Dang;J. Lei;Shunrong Zhang;Binzheng Zhang;A. Burns
DOI:
10.1016/0021-9169(89)90078-0
发表时间:
1989-04
影响因子:
1.9
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DOI:
10.1002/2014ja020820
发表时间:
2015-04
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
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作者:
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通讯作者:
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