Observational evidence of ionospheric migrating tide modification during the 2009 stratospheric sudden warming

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102271

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102271

Title:	Observational evidence of ionospheric migrating tide modification during the 2009 stratospheric sudden warming
Authors:	劉正彥;Lin, J. T.;Lin, C. H.;Chang, L. C.;Huang, H. H.;Liu, J. Y.;Chen, A. B.;Chen, C. H.;Liu, C. H.
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Accounting;Atmospheric sciences;Diurnal variations;Drivers;Earth sciences;Earth, ocean, space;Exact sciences and technology;Geophysics;Ionospheric electron density;ionospheric migrating tides;Ionospherics;Latitude;Signatures;stratospheric sudden warning;Tidal analysis;Tides
Date:	2012-01-01
Issue Date:	2026-04-23 11:05:22 (UTC+8)
Publisher:	Wiley-Blackwell;Washington, DC: Blackwell Publishing Ltd
Abstract:	摘要： In this paper, modifications of the ionospheric tidal signatures during the 2009 stratospheric sudden warming (SSW) event are studied by applying atmospheric tidal analysis to ionospheric electron densities observed using radio occultation soundings of FORMOSAT‐3/COSMIC. The tidal analysis indicates that the zonal mean and major migrating tidal components (DW1, SW2 and TW3) decrease around the time of the SSW, with 1.5–4 hour time shifts in the daily time of maximum around EIA and middle latitudes. The typical ionospheric SSW signature: a semi‐diurnal variation of the ionospheric electron density, featuring an earlier commencement and subsidence of EIA, can be reproduced by differencing the migrating tides before and during the SSW period. Our results also indicate that the migrating tides represent ∼80% of the ionospheric tidal components at specific longitudes, suggesting that modifications of the migrating tides may be the major driver for producing ionospheric changes observed during SSW events, accounting for greater variability than the nonmigrating tides that have been the focus of previous studies. 其他題名： Geophys. Res. Lett 出版者： Washington, DC: Blackwell Publishing Ltd 出版日期： 2012-01 出處： Geophysical Research Letters, 2012-01, Vol.39 (2), p.n/a 資源來源： Wiley Online Journals ** 版權： Copyright 2012 by the American Geophysical Union 版權： 2015 INIST-CNRS 版權： Copyright 2012 by American Geophysical Union 識別號： ISSN: 0094-8276 識別號： ISSN: 1944-8007 識別號： EISSN: 1944-8007 識別號： DOI: 10.1029/2011GL050248 識別號： CODEN: GPRLAJ
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

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