The Observed North Equatorial Countercurrent in the Far Western Pacific Ocean during the 2014-16 El Nino
文献类型：期刊论文
| 作者 | Zhou, Hui1,4,5; Liu, Hengchang1,4,5; Tan, Shuwen1,4,5; Yang, Wenlong1,4,5; Li, Yao4,5; Liu, Xueqi1,4,5 ; Ren, Qiang4,5; Dewar, William K.2,3
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| 刊名 | JOURNAL OF PHYSICAL OCEANOGRAPHY
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| 出版日期 | 2021-06-01 |
| 卷号 | 51期号:6页码:2003-2020 |
| 关键词 | Baroclinic flows El Nino ENSO Instability Ocean circulation Ocean dynamics |
| ISSN号 | 0022-3670 |
| DOI | 10.1175/JPO-D-20-0293.1 |
| 通讯作者 | Zhou, Hui(zhouhui@qdio.ac.cn) |
| 英文摘要 | The structure and variations of the North Equatorial Countercurrent (NECC) in the far western Pacific Ocean during 2014-16 are investigated using repeated in situ hydrographic data, altimeter data, Argo data, and reanalysis data. The NECC shifted similar to 1 degrees southward and intensified significantly with its transport exceeding 40 Sv (1 Sv equivalent to 10(6) m(3) s(-1)), nearly double its climatology value, during the developing phase of the 2015/16 El Nino event. Observations show that the 2015/16 El Nino exerted a comparable impact on the NECC with that of the extreme 1997/98 El Nino in the far western Pacific Ocean. Baroclinic instability provided the primary energy source for the eddy kinetic energy (EKE) in the 2015/16 El Nino, which differs from the traditional understanding of the energy source of EKE as barotropic instability in low-latitude ocean. The enhanced vertical shear and the reduced density jump between the NECC layer and the North Equatorial Subsurface Current (NESC) layer renders the NECC-NESC system baroclinically unstable in the western Pacific Ocean during El Nino developing phase. The eddy-mean flow interactions here are diverse associated with various states of El Nino- Southern Oscillation (ENSO). |
| 资助项目 | NSFC[41876009] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; NSF[OCE-1829856] ; NSF[OCE-1941963] ; French Make Our Planet Great Again program[ANR-18-MPGA-0002] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000751705900016 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/177794]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Zhou, Hui |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Univ Grenoble Alpes, CNRS, IRD, Grenoble INP,IGE, Grenoble, France 3.Florida State Univ, Dept Ocean Atmosphere & Earth Sci, Tallahassee, FL 32306 USA 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Hui,Liu, Hengchang,Tan, Shuwen,et al. The Observed North Equatorial Countercurrent in the Far Western Pacific Ocean during the 2014-16 El Nino[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2021,51(6):2003-2020. |
| APA | Zhou, Hui.,Liu, Hengchang.,Tan, Shuwen.,Yang, Wenlong.,Li, Yao.,...&Dewar, William K..(2021).The Observed North Equatorial Countercurrent in the Far Western Pacific Ocean during the 2014-16 El Nino.JOURNAL OF PHYSICAL OCEANOGRAPHY,51(6),2003-2020. |
| MLA | Zhou, Hui,et al."The Observed North Equatorial Countercurrent in the Far Western Pacific Ocean during the 2014-16 El Nino".JOURNAL OF PHYSICAL OCEANOGRAPHY 51.6(2021):2003-2020. |
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来源：海洋研究所
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