Amplitude morphology of GPS radio occultation data for sporadic-E layers

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Title:	Amplitude morphology of GPS radio occultation data for sporadic-E layers
Authors:	丘增杰;Yeh, Wen-Hao;Huang, Cheng-Yung;Hsiao, Tung-Yuan;Chiu, Tsen-Chieh;Lin, Chien-Hung;Liou, Yuei-An
Contributors:	資訊電機學院電機工程學系
Keywords:	Atmospheric sciences;Earth sciences;Earth, ocean, space;Exact sciences and technology;External geophysics;Formosat-3;Global positioning systems;GPS;GPS radio occultation;Ionosphere;sporadic-E;Wind;Wind shear
Date:	2012-11-26
Issue Date:	2026-04-23 13:28:36 (UTC+8)
Publisher:	Wiley-Blackwell;Washington, DC: Blackwell Publishing Ltd
Abstract:	摘要： Using the Global Positioning System radio occultation (GPSRO) technique, the observation of the global ionosphere becomes possible. The irregularity in the ionospheric sporadic‐E (Es) layer, which is probably caused by wind shear, can be investigated by analyzing the signal‐to‐noise ratio (SNR) of RO signal. In this study, the relation between the amplitude of RO signals and the electron density profiles of the ionosphere is simulated, and RO data recorded in the time period from mid‐2008 to mid‐2011 are used for the analysis. Based on the simulation results, the multiple‐layer‐type (MLT) and the single‐layer‐type (SLT)Es layers which are defined by the shape of SNR, are used to analyze the global distribution of Es layer. The seasonal MLT Es layer is compared with the seasonal wind shear, which is obtained from the Horizontal Wind Model (HWM07). Furthermore, the seasonal MLT Es layer is compared with the SLT Es layer, and the global altitude distributions of MLT and SLT Es layers are similar while the magnitude distributions are different. Unlike the MLT Es layer, the global distribution of the SLT Es layer is similar to the distribution of E region peak electron density (NmE), which is related to the solar zenith angle. 其他題名： J. Geophys. Res 出版者： Washington, DC: Blackwell Publishing Ltd 出版日期： 2012-11 出處： Journal of Geophysical Research Atmospheres, 2012-11, Vol.117 (A11), p.n/a 資源來源： Wiley Online Library All Journals 版權： 2012. American Geophysical Union. All Rights Reserved. 版權： 2014 INIST-CNRS 版權： Copyright American Geophysical Union 2012 識別號： ISSN: 0148-0227 識別號： ISSN: 2169-9380 識別號： ISSN: 2156-2202 識別號： EISSN: 2156-2202 識別號： EISSN: 2169-9402 識別號： DOI: 10.1029/2012JA017875
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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