globalchange  > 气候减缓与适应
DOI: 10.1029/2018JD028799
Scopus记录号: 2-s2.0-85053475916
论文题名:
Study of Mean Wind Variations and Gravity Wave Forcing Via a Meteor Radar Chain and Comparison with HWM-07 Results
作者: Ma Z.; Gong Y.; Zhang S.; Zhou Q.; Huang C.; Huang K.; Dong W.; Li G.; Ning B.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:17
起始页码: 9488
结束页码: 9501
语种: 英语
英文关键词: HWM-07 ; mean winds ; meteor radar chain ; MLT
英文摘要: We present an analysis of long-term observation of the mean winds in the mesosphere and lower thermosphere region. The neutral wind data are collected over the period of January 2009 to November 2017 from a chain of meteor radars along the 120°E meridian in the Northern Hemisphere which consists of four stations at Mohe (MH; 53.5°N, 122.3°E), Beijing (BJ; 40.3°N, 116.2°E), Wuhan (WH; 30.5°N, 114.6°E), and Sanya (SY; 18.3°N, 109.6°E). The annual oscillation dominates the neutral wind pattern at midlatitudes while both the annual oscillation and semiannual oscillations are important at low latitudes. The mean zonal wind pattern in midlatitudes exhibits two eastward jets. One is in the period from April to October above 85 km and the other is from November to March below 90 km. A reversal of the mean zonal winds from eastward to westward is observed in midlatitudes around the spring equinox. Gravity wave forcing during this season shows a rapid change from westward to eastward, which is consistent with the reversals. A three-cell southward wind pattern is observed over WH and SY. A strong vertical wind shear with northward flow below ~90 km and southward flow above is observed over SY from September to April. Composite-year comparisons between the observations and the Horizontal Wind Model-07 show large discrepancies during winter time. HWM-07 predictions agree with the meteor radar observations better in the zonal component than in the meridional component. The model predictions at low latitude are not as accurate as the middle latitudes. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113201
Appears in Collections:气候减缓与适应

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作者单位: School of Electronic Information, Wuhan University, Wuhan, China; Key Laboratory of Geospace Environment, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, China; State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China; Electrical and Computer Engineering Department, Miami University, Oxford, OH, United States; Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Ma Z.,Gong Y.,Zhang S.,et al. Study of Mean Wind Variations and Gravity Wave Forcing Via a Meteor Radar Chain and Comparison with HWM-07 Results[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)
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