气候变化领域集成服务门户(CCPortal): Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017

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DOI	10.1029/2020GL088398
	Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017
	Huang F.; Lei J.; Zhang R.; Li N.; Gu S.; Yu Y.; Liu L.; Owolabi C.; Ning B.; Li G.; Zhong J.; Dang T.; Ren D.; Yi W.; Luan X.; Xue X.; Yu T.; Li F.; Dou X.; Yoshikawa A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	It is well known that the ionospheric electron densities in the F-region usually undergo day-to-day variability with the magnitude of ~20–35%, associated with the solar as well as geomagnetic activities and the meteorological forcing from the lower atmosphere. In this study, we reported remarkable enhancements in the total electron content (TEC) from the Beidou geostationary (GEO) satellites during the quiescent geophysical condition of January 2017 prior to the arrival of the sudden stratosphere warming (SSW). The daytime TEC around the equatorial ionization anomaly region increased by 75–160% and lasted for several days. The equatorial electrojet and Sq current in the ionospheric E-region at low and middle latitudes showed the corresponding increase during the TEC enhancement interval. The possible contributions from the variations of solar EUV flux and geomagnetic activity are ruled out. Our further analysis showed that the diurnal tides in the temperature from Sounding of the Atmosphere using Broadband Emission Radiometry and the solar and lunar semidiurnal tides of neutral winds from two radars over China became strong during this period of interest. These results suggest that the lower atmospheric tidal forcing could contribute to the great and long-duration TEC enhancement in the ionosphere even though the SSW had not happened yet. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric electricity; E region; F region; Geostationary satellites; Orbits; Radio navigation; Tides; Day-to-day variability; Equatorial ionization anomaly; Geophysical conditions; Ionospheric electron densities; Lunar semidiurnal tide; Meteorological forcing; Sounding of the atmosphere using broadband emission radiometry; Total electron content; Geomagnetism; BDS; geomagnetism; geostationary satellite; ionosphere; radar; radiometer; stratosphere; total electron content; China
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170091
作者单位	CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; Mengcheng National Geophysical Observatory, University of Science and Technology of China, Hefei, China; CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, China; Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; Beijing National Observatory of Space Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; Innovation Academy for Earth Science, Chinese Academy of Sciences, China; College of Earth and Planetary Sciences, University of the Chinese Academy of Sciences, Beijing, China; Electronic Information School, Wuhan University, Wuhan, China; Planetary Environmental and Astrobiological Research Laboratory, School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, China; Institute of Geophys...
推荐引用方式 GB/T 7714	Huang F.,Lei J.,Zhang R.,et al. Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017[J],2020,47(14).
APA	Huang F..,Lei J..,Zhang R..,Li N..,Gu S..,...&Yoshikawa A..(2020).Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017.Geophysical Research Letters,47(14).
MLA	Huang F.,et al."Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017".Geophysical Research Letters 47.14(2020).