Global structure and seasonal variations of the migrating 6-h tide observed by SABER/TIMED

	Global structure and seasonal variations of the migrating 6-h tide observed by SABER/TIMED
	Liu MoHan; Xu JiYao; Yue Jia; Jiang GuoYing
刊名	SCIENCE CHINA-EARTH SCIENCES
	2015
卷号	58 期号:7 页码:1216-1227
关键词	migrating tide global structure seasonal variations non-linear interaction bispectral analysis
ISSN号	1674-7313
通讯作者	Liu, MH (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China.
英文摘要	Ten years of SABER/TIMED temperature data are used to analyze the global structure and seasonal variations of the migrating 6-h tide from the stratosphere to the lower thermosphere. The amplitudes of the migrating 6-h tide increase with altitudes. In the stratosphere, the migrating 6-h tide peaks around 35 degrees N/S. The climatologically annual mean of the migrating 6-h tide clearly shows the manifestation of the (4, 6) Hough mode between 70 and 90 km that peaks at the equator and near 35 degrees N/S. Above 90 km, the 6-h tide shows more than one Hough mode with the (4, 6) mode being the dominant one. The migrating 6-h tide is stronger in the southern hemisphere. Annual, semiannual, 4-, and 3-month oscillations are the four dominant seasonal variations of the tidal amplitude. In the stratosphere and stratopause, the spring enhancement of the 6-h tide at middle latitudes is the most conspicuous feature. From the mesosphere to the lower thermosphere, the tidal amplitude at low latitudes is gradually in the scale of that at middle latitudes and exhibits different temporal variations at different altitudes and latitudes. Both ozone heating in the stratosphere and the background atmosphere probably affect the generation and the seasonal variations of the migrating 6-h tide. In addition, the non-linear interaction between different tidal harmonics is another possible mechanism.
收录类别	SCI ; EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4587]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Liu MoHan,Xu JiYao,Yue Jia,et al. Global structure and seasonal variations of the migrating 6-h tide observed by SABER/TIMED[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(7):1216-1227.
APA	Liu MoHan,Xu JiYao,Yue Jia,&Jiang GuoYing.(2015).Global structure and seasonal variations of the migrating 6-h tide observed by SABER/TIMED.SCIENCE CHINA-EARTH SCIENCES,58(7),1216-1227.
MLA	Liu MoHan,et al."Global structure and seasonal variations of the migrating 6-h tide observed by SABER/TIMED".SCIENCE CHINA-EARTH SCIENCES 58.7(2015):1216-1227.