Estimating thermohaline variability of the equatorial Pacific Ocean from satellite altimetry

doi:10.1007/s11430-016-0048-2

IOCAS-IR > 海洋环流与波动重点实验室

	Estimating thermohaline variability of the equatorial Pacific Ocean from satellite altimetry
	Sun Che 1,2; Ma Xiao3
	2016-11-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
卷号	59 期号:11 页码:2213-2222
文章类型	Article
摘要	The vertical thermohaline structure in the western equatorial Pacific is examined with a Gravest Empirical Mode (GEM) diagnosis of in-situ mooring measurements. The poor GEM performance in estimating deep thermohaline variability from satellite altimetry confirms a lack of vertical coherence in the equatorial ocean. Mooring observation reveals layered equatorial water with phase difference up to 6 months between thermocline and sub-thermocline variations. The disjointed layers reflect weak geostrophy and resemble pancake structures in non-rotating stratified turbulence. A coherency theorem is then proved, stating that traditional stationary GEM represents in-phase coherent structure and can not describe vertically out-of-phase variability. The fact that stationary GEM holds both spatial and temporal coherence makes it a unique tool to diagnose vertical coherent structure in geophysical flows. The study also develops a non-stationary GEM projection that captures more than 40% of the thermohaline variance in the equatorial deep water.
关键词	Equatorial Pacific Triton Buoys Satellite Altimetry Gem Vertical Coherence
DOI	10.1007/s11430-016-0048-2
收录类别	SCI
语种	英语
WOS记录号	WOS:000387396800011
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/136204
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Natl Lab Marine Sci & Technol, Qingdao 266071, Peoples R China 3.State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Sun Che,Ma Xiao. Estimating thermohaline variability of the equatorial Pacific Ocean from satellite altimetry[J]. SCIENCE CHINA-EARTH SCIENCES,2016,59(11):2213-2222.
APA	Sun Che,&Ma Xiao.(2016).Estimating thermohaline variability of the equatorial Pacific Ocean from satellite altimetry.SCIENCE CHINA-EARTH SCIENCES,59(11),2213-2222.
MLA	Sun Che,et al."Estimating thermohaline variability of the equatorial Pacific Ocean from satellite altimetry".SCIENCE CHINA-EARTH SCIENCES 59.11(2016):2213-2222.

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