Response of the western North Pacific subtropical ocean to the slow-moving super typhoon Nanmadol

doi:10.1007/s00343-019-8114-0

IOCAS-IR > 海洋环流与波动重点实验室

	Response of the western North Pacific subtropical ocean to the slow-moving super typhoon Nanmadol
	Yang Bing1,2,3,4 ; Hou Yijun 1,2,3; Li Min 4
	2019-05-01
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
卷号	37 期号:3 页码:938-956
通讯作者	Hou Yijun(yjhou@qdio.ac.cn)
摘要	Based on in-situ observation, satellite and reanalysis data, responses of the western North Pacific subtropical ocean (WNPSO) to the slow-moving category 5 super typhoon Nanmadol in 2011 are analyzed. The dynamical response is dominated by near-inertial currents and Ekman currents with maximum amplitude of 0.39 m/s and 0.15 m/s, respectively. The near-inertial currents concentrated around 100 m below the sea surface and had an e-folding timescale of 4 days. The near-inertial energy propagated both upward and downward, and the vertical phase speed and wavelength were estimated to be 5 m/h and 175 m, respectively. The frequency of the near-inertial currents was blue-shifted near the surface and red-shifted in ocean interior which may relate to wave propagation and/or background vorticity. The resultant surface cooling reaches -4.35 degrees C and happens when translation speed of Nanmadol is smaller than 3.0 m/s. When Nanmadol reaches super typhoon intensity, the cooling is less than 3.0 degrees C suggesting that the typhoon translation speed plays important roles as well as typhoon intensity in surface cooling. Upwelling induced by the slow-moving typhoon wind leads to typhoon track confined cooling area and the right-hand bias of cooling is slight. The mixed layer cooling and thermocline warming are induced by wind-generated upwelling and vertical entrainment. Vertical entrainment also led to mixed layer salinity increase and thermocline salinity decrease, however, mixed layer salinity decrease occurs at certain stations as well. Our results suggest that typhoon translation speed is a vital factor responsible for the oceanic thermohaline and dynamical responses, and the small Mach number (slow typhoon translation speed) facilitate development of Ekman current and upwelling.
关键词	oceanic response western North Pacific subtropical ocean South China Sea typhoon Nanmadol
DOI	10.1007/s00343-019-8114-0
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000469401600018
出版者	SCIENCE PRESS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/161578
专题	海洋环流与波动重点实验室
通讯作者	Hou Yijun
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao 266237, Shandong, Peoples R China 4.Shandong Acad Sci, Inst Oceanog Instrumentat, Qingdao 266001, Shandong, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
通讯作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Yang Bing,Hou Yijun,Li Min. Response of the western North Pacific subtropical ocean to the slow-moving super typhoon Nanmadol[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(3):938-956.
APA	Yang Bing,Hou Yijun,&Li Min.(2019).Response of the western North Pacific subtropical ocean to the slow-moving super typhoon Nanmadol.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(3),938-956.
MLA	Yang Bing,et al."Response of the western North Pacific subtropical ocean to the slow-moving super typhoon Nanmadol".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.3(2019):938-956.

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