Seasonal variation of the surface North Equatorial Countercurrent (NECC) in the western Pacific Ocean
文献类型：CNKI期刊论文
| 作者 | Zhao J(赵君); Li YL(李元龙); Wang F(王凡)
|
| 发表日期 | 2016-11-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | North Equatorial Countercurrent(NECC) seasonal variation western Pacific Ocean wind stress |
| 英文摘要 | The North Equatorial Countercurrent(NECC) is an important zonal fl ow in the upper circulation of the tropical Pacifi c Ocean, which plays a vital role in the heat budget of the western Pacifi c warm pool. Using satellite-derived data of ocean surface currents and sea surface heights(SSHs) from 1992 to 2011, the seasonal variation of the surface NECC in the western tropical Pacifi c Ocean was investigated. It was found that the intensity(INT) and axis position(Y_(CM)) of the surface NECC exhibit strikingly different seasonal fl uctuations in the upstream(128°–136°E) and downstream(145°–160°E) regions. Of the two regions, the seasonal cycle of the upstream NECC shows the greater interannual variability. Its INT and Y CM are greatly infl uenced by variations of the Mindanao Eddy, Mindanao Dome(MD), and equatorial Rossby waves to its south. Both INT and YC M also show semiannual signals induced by the combined effects of equatorial Rossby waves from the Central Pacifi c and local wind forcing in the western Pacifi c Ocean. In the downstream region, the variability of the NECC is affected by SSH anomalies in the MD and the central equatorial Pacifi c Ocean. Those in the MD region are especially important in modulating the Y CM of the downstream NECC. In addition to the SSH-related geostrophic fl ow, zonal Ekman fl ow driven by meridional wind stress also plays a role, having considerable impact on INT variability of the surface NECC. The contrasting features of the variability of the NECC in the upstream and downstream regions refl ect the high complexity of regional ocean dynamics. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(No.41276001) ; the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA11010201) ; the Global Change and Air-Sea Interaction Program(No.GASI-03-01-01-05) ; the National Basic Research Program of China(973 Program)(No.2012CB417401) ; the Scientific and Technological Development Plan Project of Shandong Province(No.2013GRC31503) |
| 卷 | v.34期:06页:192-206 |
| 语种 | 英文; |
| 分类号 | P731.2 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189481]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciences 2.DepartmentofAtmosphericandOceanicSciences,UniversityofColorado 3.FunctionLaboratoryforOceanDynamicsandClimate,QingdaoNationalLaboratoryforMarineScienceandTechnology |
| 推荐引用方式 GB/T 7714 | Zhao J,Li YL,Wang F. Seasonal variation of the surface North Equatorial Countercurrent (NECC) in the western Pacific Ocean. 2016. |
入库方式： OAI收割
来源：海洋研究所
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