Possible modulation of migrating diurnal tide by latitudinal gradient of zonal wind observed by SABER/TIMED

	Possible modulation of migrating diurnal tide by latitudinal gradient of zonal wind observed by SABER/TIMED
	Liu, MoHan; Xu, JiYao; Liu, HanLi; Liu, Xiao
刊名	Science China Earth Sciences
	2015
ISSN号	1674-7313
通讯作者	Liu, MoHan
英文摘要	Temperature data from SABER/TIMED and Empirical Orthogonal Function (EOF) analysis are taken to examine possible modulations of the temperature migrating diurnal tide (DW1) by latitudinal gradients of zonal mean zonal wind ((Formula presented.)). The result shows that (Formula presented.) increases with altitudes and displays clearly seasonal and interannual variability. In the upper mesosphere and lower thermosphere (MLT), at the latitudes between 20°N and 20°S, when (Formula presented.) strengthens (weakens) at equinoxes (solstices) the DW1 amplitude increases (decreases) simultaneously. Stronger maximum in March-April equinox occurs in both (Formula presented.) and the DW1 amplitude. Besides, a quasi-biennial oscillation of DW1 is also found to be synchronous with (Formula presented.). The resembling spatial-temporal features suggest that (Formula presented.) in the upper tropic MLT probably plays an important role in modulating semiannual, annual, and quasi-biennial oscillations in DW1 at the same latitude and altitude. In addition, (Formula presented.) in the mesosphere possibly affects the propagation of DW1 and produces SAO of DW1 in the lower thermosphere. Thus, SAO of DW1 in the upper MLT may be a combined effect of (Formula presented.) both in the mesosphere and in the upper MLT, which models studies should determine in the future. © 2015 Science China Press and Springer-Verlag Berlin Heidelberg
收录类别	EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/5200]
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,Liu, HanLi,et al. Possible modulation of migrating diurnal tide by latitudinal gradient of zonal wind observed by SABER/TIMED[J]. Science China Earth Sciences,2015.
APA	Liu, MoHan,Xu, JiYao,Liu, HanLi,&Liu, Xiao.(2015).Possible modulation of migrating diurnal tide by latitudinal gradient of zonal wind observed by SABER/TIMED.Science China Earth Sciences.
MLA	Liu, MoHan,et al."Possible modulation of migrating diurnal tide by latitudinal gradient of zonal wind observed by SABER/TIMED".Science China Earth Sciences (2015).