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标题：Ionospheric tilting of 21 August 2017 total solar eclipse sounded by GNSS ground-based receivers and radio occultation
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作者：Chi-Yen Lin ; Jann-Yenq Liu ; Yang-Yi Sun 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：2021
卷号：32
期号：4
页码：531-539
DOI：10.3319/TAO.2021.08.17.01
语种：English
出版社：Chinese Geoscience Union
摘要：A total solar eclipse passed over the continental United States from the west to the east coast on 21 August 2017. Measurements made by more than 2200 groundbased GNSS (Global Navigation Satellite System) receivers observed a significant decrease in ionospheric total electron content (TEC). Meanwhile, radio occultation soundings from the LEMUR2-LYNSEY-SYMO satellite record a double-peaked feature in the scanned TEC profile. A reproduction of the double-peaked feature on the TEC profile shows that the solar eclipse depresses the electron density and simultaneously tilts the ionosphere. This study, in turn, indicates the combination of the International Reference Ionosphere model and the GNSS TEC is a powerful tool for observing ionospheric space weather.