Variability of the Mindanao Current Induced by El Ni(n)over-tildeo Events | |
Ren, Qiuping3,4; Li, Yuanlong1,2,4; Wang, Fan1,2,3,4; Duan, Jing1,2,4; Hu, Shijian1,2,3,4; Wang, Fujun1,2,4 | |
刊名 | JOURNAL OF PHYSICAL OCEANOGRAPHY |
2020-06-01 | |
卷号 | 50期号:6页码:1753-1772 |
ISSN号 | 0022-3670 |
DOI | 10.1175/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 |
出版者 | AMER METEOROLOGICAL SOC |
WOS记录号 | WOS:000589823100012 |
内容类型 | 期刊论文 |
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.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, 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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论