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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39530

Title: A satellite and field view of the winter SST variability in the taiwan strait
Authors: Ming-An Lee
Yi Chang
Kuotien Lee
Jui-Wen Chan
Don-Chung Liu
Wei-Cheng Su
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Date: 2005-08
Issue Date: 2016-12-16T07:30:27Z
Publisher: IEEE Xplore Digital Library
Abstract: Abstract:Satellite-sensed advanced very high resolution radiometer (AVHRR) sea surface temperature (SST) data over eight winters (1996-2003) and shipboard measurement during winter 2002 were used to analyze the winter SST patterns of variability in the middle of Taiwan Strait. Empirical orthogonal function (EOF) analysis of the spatial and temporal variance for 81 nearly cloud-free quarter monthly images was performed. The time series of spatial mean SST was like a non-linear mode associated with the seasonal thermal variation, having an average value about 20°C. The EOF analysis shows that the variance of oceanic feature was more significant in space than in time. The first mode (85.7%) of the spatial variance shows a persistent front near the Chang-Yuen Ridge in the middle of Taiwan Strait, which separates warmer surface water (>22°C) to the southeast from the colder waters (<19°C) off Mainland China to the northwest. The maximum temperature and salinity gradient at Chang-Yuen Ridge were found about 0.11°C/km and 0.048 psu/km, respectively. The second and third spatial variance modes are extremely low energy about 3.13% and 1.92%, respectively. The EOF's signal and field observation revealed that the heating exchange, balance and its strength (i.e. coolness index) of cold water to warm water, were temporally shifted in winter. From these images, we also constructed an overall coolness index, which revealed the relative strength of Mainland China Coastal Current in relation to the interaction of the South China Sea Warm Current and Kuroshlo Counter Current.
Relation: 4
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39530
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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