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Variability of the Mindanao Current Induced by El Ni(n)over-tildeo Events

文献类型：期刊论文

作者Ren, Qiuping1,4; Li, Yuanlong2,3,4; Wang, Fan1,2,3,4; Duan, Jing2,3,4; Hu, Shijian1,2,3,4; Wang, Fujun2,3,4
刊名JOURNAL OF PHYSICAL OCEANOGRAPHY
出版日期2020-06-01
卷号50期号:6页码:1753-1772
ISSN号0022-3670
DOI10.1175/JPO-D-19-0150.1
通讯作者Wang, Fan(fwang@qdio.ac.cn)
英文摘要Historical observations have documented prominent changes of the Mindanao Current (MC) during El Ni (n) over tildeo events, yet a systematic understanding of how El Ni (n) over tildeo modulates the MC is still lacking. Mooring observations during December 2010-August 2014 revealed evident year-to-year variations of the MC in the upper 400 m that were well reproduced by the Hybrid Coordinate Ocean Model (HYCOM). Composite analysis was conducted for 10 El Ni (n) over tildeo events during 1980-2015 using five model-based datasets (HYCOM, OFES, GEOS-ODA, SODA2.2.4, and SODA3.3.1). A consensus is reached in suggesting that a developing (decaying) El Ni (n) over tildeo strengthens (weakens) the MC, albeit with quantitative differences among events and datasets. HYCOM experiments demonstrate that the MC variability is mainly a first baroclinic mode response to surface wind forcing of the tropical Pacific, but the specific mechanism varies with latitude. The upstream part of the MC north of 7.5 degrees N is controlled by wind forcing between 6 degrees and 9 degrees N through Ekman pumping, whereas its downstream part south of 7.5 degrees N is greatly affected by equatorial winds. Prevailing westerly winds and Ekman upwelling in the developing stage cause cyclonic anomalous circulation in the northwest tropical Pacific that strengthens the MC, and the opposite surface wind forcing effect in the decaying stage weakens the MC. Although ocean models show difficulties in realistically representing the northward-flowing Mindanao Undercurrent (MUC) beneath the MC and its seasonal and interannual variations, all five products suggest an enhancement of the MUC during the decaying stage of El Ni (n) over tildeo.
资助项目National Natural Science Foundation of China[41806014] ; National Natural Science Foundation of China[41730534] ; National Natural Science Foundation of China[41776001] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-01]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:000589823100012
出版者AMER METEOROLOGICAL SOC
源URL[http://ir.qdio.ac.cn/handle/337002/169459]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者Wang, Fan
作者单位1.Univ Chinese Acad Sci, Beijing, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Ren, Qiuping,Li, Yuanlong,Wang, Fan,et al. Variability of the Mindanao Current Induced by El Ni(n)over-tildeo Events[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2020,50(6):1753-1772.
APA Ren, Qiuping,Li, Yuanlong,Wang, Fan,Duan, Jing,Hu, Shijian,&Wang, Fujun.(2020).Variability of the Mindanao Current Induced by El Ni(n)over-tildeo Events.JOURNAL OF PHYSICAL OCEANOGRAPHY,50(6),1753-1772.
MLA Ren, Qiuping,et al."Variability of the Mindanao Current Induced by El Ni(n)over-tildeo Events".JOURNAL OF PHYSICAL OCEANOGRAPHY 50.6(2020):1753-1772.

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来源：海洋研究所

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