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Variations of mesospheric neutral winds and tides observed by a meteor radar chain over China during the 2013 sudden stratospheric warming


Li, Na and Luan, Xiaoli and Lei, Jiuhou and Bolaji, OS and Owolabi, Charles and Chen, Jinsong and Xu, Zhengwen and Li, Guozhu and Ning, Baiqi, Variations of mesospheric neutral winds and tides observed by a meteor radar chain over China during the 2013 sudden stratospheric warming, Journal of Geophysical Research-Space Physics, 125, (5) Article e2019JA027443. ISSN 2169-9380 (2020) [Refereed Article]


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Copyright 2020 American Geophysical Union

DOI: doi:10.1029/2019JA027443


The neutral winds in the mesospheric and lower thermospheric region obtained from a meteor radar chain within the latitudinal range of 1853N were decomposed to examine the latitudinal structures of the tides and mean winds during the sudden stratospheric warming (SSW) event in 2013. The zonal wind reversed from eastward to westward and the westward wind was larger at middle latitudes than that at low latitudes during the SSW. Meanwhile, a sharp increase in the northward wind was noticeable at all stations. The amplitudes of the diurnal and semidiurnal tides decreased from 5 to 13 January and increased subsequently. At the same time, the terdiurnal tides increased in amplitude, especially at Beijing, Wuhan, and Kunming, in response to the SSW. Moreover, the tidal phases showed a large shift that corresponded to a great increase in tidal wavelengths in the semidiurnal and terdiurnal components. The wavelet analysis further revealed that the quasi 6‐day wave oscillations dominated in the winds at Kunming and Sanya stations, as well as the quasi 16‐day wave dominated in the zonal wind, and the quasi 11‐day and 16‐day waves were prevailing in the meridional winds at Beijing and Wuhan. In the same vein, the quasi 16‐day and quasi 11‐day waves were prominent in the zonal and meridional winds during 118 January at Mohe. Therefore, the tide‐planetary wave interactions played a significant role in modulating the behaviors of the mesospheric and lower thermospheric dynamics during the SSW event.

Item Details

Item Type:Refereed Article
Keywords:meteor radar chain, sudden stratospheric warming, neutral winds, tides
Research Division:Physical Sciences
Research Group:Space sciences
Research Field:Mesospheric, thermospheric, ionospheric and magnetospheric physics
Objective Division:Environmental Management
Objective Group:Air quality, atmosphere and weather
Objective Field:Atmospheric processes and dynamics
UTAS Author:Bolaji, OS (Dr Olawale Bolaji)
ID Code:140017
Year Published:2020
Web of Science® Times Cited:4
Deposited By:Physics
Deposited On:2020-07-22
Last Modified:2020-08-19
Downloads:9 View Download Statistics

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