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Title: Mechanism of weaking west Luzon eddy duing La Nina years
Authors: Zheng Zhe-Wen;Ho Chung-Ru;Kuo Nan-Jung
Contributors: NTOU:Department of Marine Environmental Informatics
Date: 2007-06
Issue Date: 2011-10-20T08:23:11Z
Publisher: Geophysical Research Letters
Abstract: abstract:Multi-satellite sea level anomalies from January 1993 to December 2004 are used to investigate the variability of sea surface features in the South China Sea (SCS). Applying empirical orthogonal function (EOF) analysis, the dominant spatial features and corresponding temporal variability are revealed. The most remarkable characteristic of variability on an interannual time scale is the abnormal weakening of meso-scale eddy off west Luzon (west Luzon eddy, WLE) during 1998-2001. The possible mechanism inducing the weakening is found to be associated with a large-scale forcing over the Pacific intruding into the northern SCS along the northern coast of Luzon. Moreover, the tight correlation between the Nino3.4 sea surface temperature index and the interannual variability of large-scale forcing indicates that La Nina events may modulate the west Pacific water entering the northern SCS which contributes to the weakening of the WLE eventually.
Relation: 34(11), pp.L11604
URI: http://ntour.ntou.edu.tw/handle/987654321/25426
Appears in Collections:[海洋環境資訊系] 期刊論文

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