Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere
Due to the significant changes they bring to high latitude stratospheric temperature and wind, stratospheric sudden warmings (SSWs) can have an impact on the propagation and energy distribution of gravity waves (GWs). The variation characteristics of GWs during SSWs have always been an important iss...
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Format: | Article |
Language: | English |
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Science Press
2024-03-01
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Series: | Earth and Planetary Physics |
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Online Access: | http://www.eppcgs.org/article/doi/10.26464/epp2024007?pageType=en |
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author | XuanYun Zeng Guang Zhong |
author_facet | XuanYun Zeng Guang Zhong |
author_sort | XuanYun Zeng |
collection | DOAJ |
description | Due to the significant changes they bring to high latitude stratospheric temperature and wind, stratospheric sudden warmings (SSWs) can have an impact on the propagation and energy distribution of gravity waves (GWs). The variation characteristics of GWs during SSWs have always been an important issue. Using temperature data from January to March in 2014−2016, provided by the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) mission, we have analyzed global GW activity at 15−40 km in the Northern Hemisphere during SSW events. During the SSWs that we studied, the stratospheric temperature rose in one or two longitudinal regions in the Northern Hemisphere; the areas affected extended to the east of 90°W. During these SSWs, the potential energy density (\begin{document}$ {E}_{p} $\end{document}) of GWs expanded and covered a larger range of longitude and altitude, exhibiting an eastward and downward extension. The \begin{document}$ {E}_{p} $\end{document} usually increased, while partially filtered by the eastward zonal winds. When zonal winds weakened or turned westward, \begin{document}$ {E}_{p} $\end{document} began to strengthen. After SSWs, the \begin{document}$ {E}_{p} $\end{document} usually decreased. These observations can serve as a reference for analyzing the interaction mechanism between SSWs and GWs in future work. |
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issn | 2096-3955 |
language | English |
last_indexed | 2024-03-07T14:27:30Z |
publishDate | 2024-03-01 |
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spelling | doaj.art-d70b6bb3c69843e7aaba36e3e810204a2024-03-06T05:52:30ZengScience PressEarth and Planetary Physics2096-39552024-03-018241542210.26464/epp2024007RA439-zengxuanyun-FAnalysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphereXuanYun Zeng0Guang Zhong1School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410000, ChinaSchool of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410000, ChinaDue to the significant changes they bring to high latitude stratospheric temperature and wind, stratospheric sudden warmings (SSWs) can have an impact on the propagation and energy distribution of gravity waves (GWs). The variation characteristics of GWs during SSWs have always been an important issue. Using temperature data from January to March in 2014−2016, provided by the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) mission, we have analyzed global GW activity at 15−40 km in the Northern Hemisphere during SSW events. During the SSWs that we studied, the stratospheric temperature rose in one or two longitudinal regions in the Northern Hemisphere; the areas affected extended to the east of 90°W. During these SSWs, the potential energy density (\begin{document}$ {E}_{p} $\end{document}) of GWs expanded and covered a larger range of longitude and altitude, exhibiting an eastward and downward extension. The \begin{document}$ {E}_{p} $\end{document} usually increased, while partially filtered by the eastward zonal winds. When zonal winds weakened or turned westward, \begin{document}$ {E}_{p} $\end{document} began to strengthen. After SSWs, the \begin{document}$ {E}_{p} $\end{document} usually decreased. These observations can serve as a reference for analyzing the interaction mechanism between SSWs and GWs in future work.http://www.eppcgs.org/article/doi/10.26464/epp2024007?pageType=enstratospheric sudden warminggravity wavewind filter |
spellingShingle | XuanYun Zeng Guang Zhong Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere Earth and Planetary Physics stratospheric sudden warming gravity wave wind filter |
title | Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere |
title_full | Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere |
title_fullStr | Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere |
title_full_unstemmed | Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere |
title_short | Analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere |
title_sort | analysis of gravity wave activity during stratospheric sudden warmings in the northern hemisphere |
topic | stratospheric sudden warming gravity wave wind filter |
url | http://www.eppcgs.org/article/doi/10.26464/epp2024007?pageType=en |
work_keys_str_mv | AT xuanyunzeng analysisofgravitywaveactivityduringstratosphericsuddenwarmingsinthenorthernhemisphere AT guangzhong analysisofgravitywaveactivityduringstratosphericsuddenwarmingsinthenorthernhemisphere |