气候变化领域集成服务门户(CCPortal): Dynamical Ocean Responses to Typhoon Malakas (2016) in the Vicinity of Taiwan

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DOI	10.1029/2020JC016663
	Dynamical Ocean Responses to Typhoon Malakas (2016) in the Vicinity of Taiwan
	Shen D.; Li X.; Wang J.; Bao S.; Pietrafesa L.J.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	Saffir-Simpson Category-4 Typhoon Malakas crossed the Kuroshio, the Western Boundary Current of the North Pacific Ocean, and moved along the path of the Kuroshio for eight days between September 12 and 20, 2016. Malakas induced a 3–4°C sea surface cooling and an increase in sea surface Chlorophyll-a concentration to 0.8 mg/m3. The total cooling area was approximately 18,000 km2. Satellite observations show that Malakas triggered two upwelling regions associated with two mesoscale eddies, both to the northeast of Taiwan. The Regional Oceanic Modeling System (ROMS) was employed to offer insights into the dynamical mechanisms on the ocean response to a typhoon. The numerical model results reveal that a coastal upwelling event was induced by southeasterly winds blowing prior to the arrival of Malakas' outer band, and caused a surface cooling near Taiwan's northeast coast. A branch of the Taiwan Warm Current interacted with the offshore Kuroshio current to form an eddy prior to the typhoon's arrival. Malakas then facilitated the development of the near-coastal eddy. An open ocean eddy was triggered by inertial-Ekman pumping under the forcing effect of Malakas. The interaction between the southward current caused by Malakas and the northeastward flowing Kuroshio maintained these two induced mesoscale eddies. Numerical results show a near-inertial oscillation (IO) of about a 26-h period with an e-folding time scale of ∼5 days was magnified and modulated by Malakas. The typhoon-induced oceanic phenomena were very well revealed in this combined observational and numerical modeling study. © 2020. The Authors.
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186498
作者单位	Department of Coastal and Marine Systems Science, Coastal Carolina University, Conway, SC, United States; CAS Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; NOAA Great Lakes Environmental Research Laboratory, Ann Arbor, MI, United States; Department of Marine, Earth and Atmospheric Sciences (emeritus), North Carolina State University, Raleigh, NC, United States
推荐引用方式 GB/T 7714	Shen D.,Li X.,Wang J.,et al. Dynamical Ocean Responses to Typhoon Malakas (2016) in the Vicinity of Taiwan[J],2021,126(2).
APA	Shen D.,Li X.,Wang J.,Bao S.,&Pietrafesa L.J..(2021).Dynamical Ocean Responses to Typhoon Malakas (2016) in the Vicinity of Taiwan.Journal of Geophysical Research: Oceans,126(2).
MLA	Shen D.,et al."Dynamical Ocean Responses to Typhoon Malakas (2016) in the Vicinity of Taiwan".Journal of Geophysical Research: Oceans 126.2(2021).