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Observed interannual variability of the Kuroshio and Luzon Undercurrent associated with tropical and subtropical wind forcing

文献类型：期刊论文

作者Ma, Jie3,4; Zhang, Zhanqing2,4; Hu, Shijian2,3,4; Villanoy, Cesar1; Guo, Xinying2,4; Wang, Fan2,3,4; Hu, Dunxin2,3,4
刊名PROGRESS IN OCEANOGRAPHY
出版日期2023-12-01
卷号219页码:14
关键词Western North Pacific Western boundary currents Interannual variability Wind forcing Observations
ISSN号0079-6611
DOI10.1016/j.pocean.2023.103146
通讯作者Hu, Shijian(sjhu@qdio.ac.cn)
英文摘要The interannual variability of the Kuroshio and Luzon Undercurrent (LUC) east of the Luzon Island is examined using observations from a moorings during December 2010-October 2012 and three moorings during January 2018-May 2020 deployed at 18 degrees N. Measurements from acoustic Doppler current profiler (ADCP) equipped on the moorings indicate that the interannual variations of upper-layer Kuroshio and lower-layer LUC were in phase. The interannual variability is strong in the Kuroshio but weakens substantially in the LUC. A proxy of the Kuroshio and LUC based on sea level slope is developed and validated by comparing the ADCP and satellite altimeter measurements. The proxy during 1993-2020 shows that the interannual sea level slope across the Kuroshio is primarily associated with sea level fluctuations on its eastern flank. Diagnostic analysis and nu-merical sensitivity experiments using a simplified ocean model indicate that the wind forcing in the subtropical northwestern Pacific Ocean played an essential role in the interannual variability of Kuroshio and LUC's strength and water mass properties during the observation periods in 2011 and 2018-2020, although the tropical winds dominated the interannual variability of the two boundary currents during most time of the past three decades (1993-2020). The mooring observations show that the subsurface water mass in the LUC at the depth of about 650-800 m experienced a considerable freshening event from July 2019 until at least January 2020 due to abnormally strong subtropical wind forcing.
WOS关键词NORTH EQUATORIAL CURRENT ; WESTERN BOUNDARY CURRENTS ; MINDANAO CURRENT ; SEASONAL VARIABILITY ; SEA-LEVEL ; BIFURCATION ; CIRCULATION ; EAST ; SYSTEM ; COAST
资助项目National Natural Science Foundation of China[42006002] ; National Natural Science Foundation of China[42022040] ; Shandong Provincial Natural Science Foundation[ZR2020JQ18] ; Strategic Priority Research Program of CAS[XDB42010403] ; China Postdoctoral Science Foundation[2021T140674] ; CAS Interdisciplinary Innovation Team[JCTD-2020-12]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:001099192000001
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.qdio.ac.cn/handle/337002/183906]  
专题海洋研究所_海洋环流与波动重点实验室
通讯作者Hu, Shijian
作者单位1.Univ Philippines Diliman, Quezon City, Philippines
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Laoshan Lab, Qingdao, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Jie,Zhang, Zhanqing,Hu, Shijian,et al. Observed interannual variability of the Kuroshio and Luzon Undercurrent associated with tropical and subtropical wind forcing[J]. PROGRESS IN OCEANOGRAPHY,2023,219:14.
APA Ma, Jie.,Zhang, Zhanqing.,Hu, Shijian.,Villanoy, Cesar.,Guo, Xinying.,...&Hu, Dunxin.(2023).Observed interannual variability of the Kuroshio and Luzon Undercurrent associated with tropical and subtropical wind forcing.PROGRESS IN OCEANOGRAPHY,219,14.
MLA Ma, Jie,et al."Observed interannual variability of the Kuroshio and Luzon Undercurrent associated with tropical and subtropical wind forcing".PROGRESS IN OCEANOGRAPHY 219(2023):14.

入库方式： OAI收割

来源：海洋研究所

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