Explanation of the sporadic-E layer formation by comparing FORMOSAT-3/COSMIC data with meteor and wind shear information

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题名:	Explanation of the sporadic-E layer formation by comparing FORMOSAT-3/COSMIC data with meteor and wind shear information
作者:	劉正彥;Yeh, Wen-Hao;Liu, Jann-Yenq;Huang, Cheng-Yung;Chen, Shih-Ping
贡献者:	地球科學學院太空科學與工程學系
关键词:	FORMOSAT-3/COSMIC;Geophysics;Global positioning systems;GPS;Hemispheres;Horizontal;Ionization;Ionosphere;meteor;Meteorology;Meteors;Meteors & meteorites;Radio meteors;radio occultation;sporadic E;Wind;Wind shear
日期:	2014-04-27
上传时间:	2026-04-23 11:03:53 (UTC+8)
出版者:	Wiley-Blackwell;Washington: Blackwell Publishing Ltd
摘要:	摘要： The formation of the sporadic E (Es) layer can be interpreted in several different ways, with wind shear theory and the meteor ionization mechanism being the most commonly used explanations. Nevertheless, neither the wind shear theory nor the meteor ionization mechanism alone can completely explain the formation of the Es layer. The meteor ionization mechanism cannot interpret the different activity in this layer between the Northern and Southern Hemispheres, while the wind shear theory cannot explain the source of the large amount of ionized particles in the Es layer. In this study, the activity in the Es layer is compared with information about meteors and the global vertical speed of ionized particles. The information about meteors is obtained from International Meteor Organization and Radio Meteor Observing Bulletin. The global vertical speed information for ionized particles is calculated using the International Geomagnetic Reference Field model, Horizontal Wind Model (HWM07), and Mass Spectrometer‐Incoherent Scatter model. The activity in the Es layer is based on the value of the irregular degree index, which is derived from the signal‐to‐noise ratio obtained from Formosa Satellite Mission‐3/Constellation Observing System for Meteorology, Ionosphere, and Climate (FORMOSAT‐3/COSMIC) Global Positioning System radio occultation mission. Taking both wind shear theory and the meteor ionization mechanism together, the source of the ionized particles in the Es layer and the difference in the activity in the Es layer between Northern and Southern Hemispheres can thus be explained more completely. Key Points Use two mechanisms to explain the activity of Es layer The ID index is used for the comparison The formation of Es layer is explained more completely 其他題名： J. Geophys. Res. Atmos 出版者： Washington: Blackwell Publishing Ltd 出版日期： 2014-04-27 出處： Journal of geophysical research. Atmospheres, 2014-04, Vol.119 (8), p.4568-4579 資源來源： Wiley Online Library Journals 版權： 2014. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 2169-897X 識別號： ISSN: 2169-8996 識別號： EISSN: 2169-8996 識別號： DOI: 10.1002/2013JD020798
显示于类别:	[太空科學與工程學系] 期刊論文

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