Global structure and seasonal variability of the migrating terdiurnal tide in the mesosphere and lower thermosphere

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Title:	Global structure and seasonal variability of the migrating terdiurnal tide in the mesosphere and lower thermosphere
Authors:	張起維;Yue, Jia;Xu, Jiyao;Chang, Loren C.;Wu, Qian;Liu, Han-Li;Lu, Xian;Russell, James
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Mesosphere and lower thermosphere;Modelling;Satellite;Terdiurnal tide
Date:	2013-12-01
Issue Date:	2026-04-23 11:04:08 (UTC+8)
Publisher:	Elsevier Ltd.;Elsevier Ltd
Abstract:	摘要： The morphology of the migrating terdiurnal tide with zonal wavenumber 3 (TW3) in the mesosphere and lower thermosphere (MLT) is revealed using the TIMED satellite datasets from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and the TIMED Doppler Interferometer (TIDI) instruments from 2002 to 2009, as well as the Thermosphere Ionosphere Mesosphere Electrodynamics General Circulation Model (TIME-GCM). The annual mean structures of the TW3 from the TIME-GCM clearly resemble the first real symmetric (3,3) Hough mode. The TW3 temperature and zonal wind components have three peaks at midlatitudes and near the equator, while the TW3 meridional wind components show four peaks at mid and low latitudes. These features are consistent with those resolved in SABER temperature and TIDI zonal wind above ~95km. TW3 components in the TIME-GCM are stronger during winter and spring months at midlatitudes, which is in agreement with previous ground-based radar measurements. On the other hand, TW3 components of temperature, zonal and meridional winds from SABER and TIDI display different seasonal variations at different altitudes and latitudes. The results presented in this paper will provide an observational basis for further modeling study of terdiurnal tide impacts on the thermosphere and ionosphere. •We study the morphology of migrating terdiurnal tide in the MLT region.•SABER, TIDI, and TIME-GCM TW3 results are compared to each other.•Annual mean TW3 in the TIME-GCM resembles the (3,3) Hough mode.•TW3 at midlatitudes has peaks in northern winter. 出版者： Elsevier Ltd 出版日期： 2013-12 出處： Journal of Atmospheric and Solar-Terrestrial Physics, 2013-12, Vol.105-106, p.191-198 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2013 Elsevier Ltd 識別號： ISSN: 1364-6826 識別號： EISSN: 1879-1824 識別號： DOI: 10.1016/j.jastp.2013.10.010
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

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