Intraseasonal variability of the Kuroshio east of Taiwan, China, observed by subsurface mooring during 2016–2017
文献类型：CNKI期刊论文
| 作者 | REN Qiang ; YU Fei; NAN Feng; WANG Jianfeng; XU Anqi
|
| 发表日期 | 2020-09-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | intraseasonal variability Kuroshio mesoscale eddy intermediate water |
| 英文摘要 | The mean velocity structure and variability of the Kuroshio east of Taiwan, China, were investigated using mooring observations acquired at 23°N/122°E between January 2016 and May 2017. Power spectrum analysis reveals marked intraseasonal variability in 70–95 days in the meridional Kuroshio velocity in the upper 800 m. Hybrid Coordinate Ocean Model assimilation data adequately reproduce variations of the Kuroshio. Westward propagating mesoscale eddies that originated from the Subtropical Countercurrent play an important role in intraseasonal variability in the Kuroshio velocity. Cyclonic(anticyclonic) eddies are often associated with negative(positive) sea surface height anomaly, resulting in positive(negative) potential vorticity in the subsurface layer of the eddy center, which decreases(increases) isopycnal slope and then weakens(strengthens) the Kuroshio. When anticyclonic(cyclonic) eddies are active, the Kuroshio axis moves offshore(inshore). Corresponding to the Kuroshio intraseasonal variability(ISV), the variation of the intermediate water salinity also had a significant ISV induced by the mesoscale eddies. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Key Research and Development Plan (Nos. 2017YFC1403401 ; 2016YFC1400505) ; the Global Climate Changes and Air-sea Interaction Program (Nos. GASI-02-PAC-ST-Wwin ; GASIIPOVAI-01-06) ; the National Natural Science Foundation of China (No. 41676005) ; the NSFC Innovative Group Grant (No. 41421005) |
| 卷 | v.38期:05页:67-79 |
| 语种 | 英文; |
| 分类号 | P731.27 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188027]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CenterforOceanMega-Science,ChineseAcademyofSciences 2.CASKeyLaboratoryofOceanCirculationandWaveStudies,InstituteofOceanology,ChineseAcademyofSciences 3.UniversityofChineseAcademyofSciences 4.PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) |
| 推荐引用方式 GB/T 7714 | REN Qiang,YU Fei,NAN Feng,et al. Intraseasonal variability of the Kuroshio east of Taiwan, China, observed by subsurface mooring during 2016–2017. 2020. |
入库方式： OAI收割
来源：海洋研究所
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