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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51469

Title: Modling of Upper Ocean Heat Budget Variations in Response to the Passage of Super Typhoon Sinlaku (2008) in the Western North Pacific
Authors: Zhe Wen Zheng
Nan Jung Kuo
Quanan Zheng
Ganesh Gopalakrishnan
Contributors: 國立臺灣海洋大學:海洋環境資訊系
Date: 2015-08
Issue Date: 2018-11-30T06:00:50Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract: In 2008, Super Typhoon Sinlaku (2008) passed over a preexisting cyclonic eddy (PCE) in the western North Pacific, causing an extreme cooling response at 22.5°N, 125°E. This case provides a rare opportunity to explore the physical mechanisms that trigger an extreme cooling response to a typhoon underlying the influence of PCEs. In this study, cooling response to Sinlaku was observed by TMI/AMSR-E microwave SSTs and simulated using the Regional Ocean Modeling System. To elucidate the impact of a PCE, in addition to standard run (EXPstd), another experiment that eliminates the influence of a PCE (EXPnonPCE) was designed and executed. By conducting upper ocean heat budget analysis on modeling diagnostic outputs, it is found that PCE enhances the cooling response by enhancing both the entrainment and upwelling simultaneously; but the dominant terms balancing the heat budget were not greatly altered by the PCE. Finally, the vertical thermal gradient is shown to be the essential factor boosting the enhancement of entrainment and upwelling, thus cooling the upper ocean.
Relation: 23(4) pp.551-557
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51469
Appears in Collections:[海洋環境資訊系] 期刊論文

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