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Study of a Quasi 4-Day Oscillation During the 2018/2019 SSW Over Mohe, China

文献类型：期刊论文

作者Ma, Zheng3,4,5; Gong, Yun3,5; Zhang, Shaodong1,3,5; Zhou, Qihou6; Huang, Chunming3,5; Huang, Kaiming3,5; Luo, Jiahui3,5; Yu, You2; Li, Guozhu2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2020-07-01
卷号125期号:7页码:11
关键词quasi-4 day oscillation SSW mesosphere and lower thermosphere meteor radar coupling
ISSN号2169-9380
DOI10.1029/2019JA027687
英文摘要We present an analysis of planetary-scale oscillations during sudden stratospheric warming (SSW) events based on data obtained from a meteor radar located at Mohe (MH, 53.5 degrees N, 122.3 degrees E), the Aura satellite and Modern-Era Retrospective analysis for Research and Applications, Version 2 data (MERRA2). The planetary-scale oscillations in the mesosphere and lower thermosphere (MLT) region during eight SSW events from 2012 to 2019 have been statistically investigated. Our analysis reveals that the enhancement or the generation of westward propagating quasi 16-day oscillation with wavenumber 1 (W1) is a common feature during SSWs over MH. A strong enhancement of the quasi 4-day oscillation during the 2018/2019 SSW is captured by both radar and satellite observations. The amplified quasi 4-day oscillation has a period of similar to 4.3 days in both meridional and zonal winds and with a wavenumber of W2 in the zonal component. Using the meteor radar and MERRA2 data, the vertical structure of the quasi 4-day oscillation from the stratosphere to the lower thermosphere is derived. The upward propagating feature of the quasi 4-day oscillation in the meridional component indicates that the oscillation is very likely generated in the lower mesosphere. The mesospheric zonal wind reversal after an elevated stratopause event is observed during the SSW, which results in a negative meridional gradient of the quasi-geostrophic potential vorticity. Our results not only reveal that the amplified quasi 4-day oscillation in the MLT region is associated with the 2018/2019 SSW but also suggest that the amplification is originally generated around 60 km due to barotropic/baroclinic instability and propagates upward to MLT region.
WOS关键词STRATOSPHERIC WARMING EVENT ; MESOSPHERE-LOWER THERMOSPHERE ; 5-DAY PLANETARY-WAVES ; MIDDLE ATMOSPHERE ; RADAR ; TEMPERATURES ; CLIMATOLOGY ; PROPAGATION ; VARIABILITY ; CIRCULATION
资助项目National Natural Science Foundation of China[41574142] ; National Natural Science Foundation of China[41531070] ; National Science Foundation[AGS-1744033] ; Specialized Research Fund for State Key Laboratories
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000556880400060
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Foundation ; National Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Foundation ; National Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Foundation ; National Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Foundation ; National Science Foundation ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories
源URL[http://ir.iggcas.ac.cn/handle/132A11/97598]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Gong, Yun
作者单位1.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Wuhan Univ, Sch Elect Informat, Wuhan, Peoples R China
4.Chinese Acad Sci, State Key Lab Space Weather, Beijing, Peoples R China
5.Minist Educ, Key Lab Geospace Environm & Geodesy, Wuhan, Peoples R China
6.Miami Univ, Dept Elect & Comp Engn, Oxford, OH USA
推荐引用方式
GB/T 7714		 Ma, Zheng,Gong, Yun,Zhang, Shaodong,et al. Study of a Quasi 4-Day Oscillation During the 2018/2019 SSW Over Mohe, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2020,125(7):11.
APA Ma, Zheng.,Gong, Yun.,Zhang, Shaodong.,Zhou, Qihou.,Huang, Chunming.,...&Li, Guozhu.(2020).Study of a Quasi 4-Day Oscillation During the 2018/2019 SSW Over Mohe, China.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,125(7),11.
MLA Ma, Zheng,et al."Study of a Quasi 4-Day Oscillation During the 2018/2019 SSW Over Mohe, China".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125.7(2020):11.

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来源：地质与地球物理研究所

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