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题名: Global tidal mapping from observations of a radar campaign
作者: Yu You; Wan Weixing; Reid Iain M.; Chen Jinsong; Vincent Robert A.; Ning Baiqi; Murphy Damian J.; Yang Guotao; Xue Xianghui; MacKinnon Andrew D.; Li Na; Yan Chunxiao; Liu Libo; Hu Lianhuan; Ren Zhipeng; Zhang Yun
作者部门: 空间科学部
通讯作者: Yu, You (yuyou@mail.iggcas.ac.cn)
关键词: Ionosphere ; Mapping ; Poles ; Radar
刊名: Advances in Space Research
ISSN号: 0273-1177
出版日期: 2017
收录类别: EI
英文摘要: Based on the one-month (October, 2014) wind observations of 11 radars distributed in both hemispheres along the 120°E meridian during a radar campaign, this article reports on improvements of the tidal mapping technique proposed before (Yu et al., 2013) by extending the latitude coverage to the global scale (from pole to pole). We first present the tidal components decomposed from the wind observations at different stations. It is revealed that the tidal components are stronger at stations in the Northern Hemisphere than in the Southern Hemisphere. Then, Hough mode decomposition is performed to extract the contributions of different tidal modes for each decomposed tidal component. The expected dominant mode, (1, 1) mode, is the strongest. The trapped (1, -2) mode also contributes a lot to the diurnal component. Yet for the semidiurnal component, (2, 4) mode along with (2, 5) mode make considerable contributions. In contrast, (3, 5) mode has the strongest amplitude for the terdiurnal component. At last, the tidal mapping technique proposed before is improved to get the pole-to-pole structure of each tidal component, based on the extracted tidal modes. The mapped tidal components successfully construct the general latitudinal and altitudinal distributions, compared with the Thermosphere Ionosphere Mesosphere Energetics and Dynamics Doppler Interferometer (TIDI) observations and Global Scale Wave Model (GSWM-09) results. Comparison of the predicted and observed tidal wind (for example, at Wuhan Station) indicates the capability of the mapping technique for reproducing the local time and altitude variations of the original observations. © 2017.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5845
Appears in Collections:空间科学部_期刊论文

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