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Observations of a Strong Intraseasonal Oscillation in the MLT Region During the 2015/2016 Winter Over Mohe, China

文献类型：期刊论文

作者Gong, Yun5,6; Xue, Junwei5,6; Ma, Zheng5,6; Zhang, Shaodong1,4,5,6; Zhou, Qihou3; Huang, Chunming5,6; Huang, Kaiming5,6; Li, Guozhu2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2022-06-01
卷号127期号:6页码:9
ISSN号2169-9380
关键词intraseasonal oscillation mesosphere and lower thermosphere mid-latitudes
DOI10.1029/2021JA030076
英文摘要Using meteor radar measurements at Mohe (MH, 53.5 degrees N, 122.3 degrees E) and the reanalysis data from 2011 to 2020, the characteristics of intraseasonal oscillations (ISOs) in the mesosphere and lower thermosphere (MLT) region over MH are investigated for the first time. The radar observation shows a prominent ISO with periods of 40-60 days in the zonal wind during the 2015/2016 winter. The observed ISO is the strongest in the oscillation period of 30-60 days during nearly a decade of observation. The ISO amplitude reaches a maximum of 16 m/s at 90 km. The vertical structure indicates that intraseasonal variabilities in the lower mesosphere contribute to the ISO in the MLT region. By bandpassing the zonal wind obtained from the reanalysis data along 122.5 degrees E at 52 km in the Northern Hemisphere with cutoff periods of 40 and 60 days, we show that ISOs in the tropical and mid-latitude mesosphere are related to each other. Our results also indicate that the tropical mesospheric ISO and the tropospheric Madden-Julian Oscillations (MJO) are highly correlated. Our analysis suggests that the MJO in the equatorial troposphere may contribute to the enhancement of the ISO in the MLT region over MH. Additionally, a very strong El Nino during the 2015/2016 winter was accompanied by the positive Indian Ocean Dipole, which confines the active MJO in phases 2-4 for a long time. This may be the reason that in the oscillation period of 30-60 days, the ISO observed at MH is the strongest during almost a decade of observation.
WOS关键词EQUATORIAL MESOSPHERE ; ZONAL WIND ; WAVES ; VARIABILITY
资助项目National Natural Science Foundation of China[41574142] ; National Natural Science Foundation of China[42127805] ; National Natural Science Foundation of China[42104145] ; U.S. National Science Foundation[AGS-2152109]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000806758900001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. National Science Foundation ; U.S. National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. National Science Foundation ; U.S. National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. National Science Foundation ; U.S. National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; U.S. National Science Foundation ; U.S. National Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/106051]  
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; Zhang, Shaodong
作者单位1.Guizhou Normal Univ, Guiyang, Peoples R China
2.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
3.Miami Univ, Elect & Comp Engn Dept, Oxford, OH 45056 USA
4.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan, Peoples R China
5.Minist Educ, Key Lab Geospace Environm & Geodesy, Wuhan, Peoples R China
6.Wuhan Univ, Sch Elect Informat, Wuhan, Peoples R China
推荐引用方式
GB/T 7714		 Gong, Yun,Xue, Junwei,Ma, Zheng,et al. Observations of a Strong Intraseasonal Oscillation in the MLT Region During the 2015/2016 Winter Over Mohe, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2022,127(6):9.
APA Gong, Yun.,Xue, Junwei.,Ma, Zheng.,Zhang, Shaodong.,Zhou, Qihou.,...&Li, Guozhu.(2022).Observations of a Strong Intraseasonal Oscillation in the MLT Region During the 2015/2016 Winter Over Mohe, China.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,127(6),9.
MLA Gong, Yun,et al."Observations of a Strong Intraseasonal Oscillation in the MLT Region During the 2015/2016 Winter Over Mohe, China".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 127.6(2022):9.

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来源：地质与地球物理研究所

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