Buoyancy Effect on the Winter South China Sea Western Boundary Current
文献类型：期刊论文
| 作者 | Yan, Yunwei; Wang, Guihua1,4; Xue, Huijie2,5; Chai, Fei2; wghocean@yahoo.com |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2019 |
| 卷号 | 124期号:10页码:6871 |
| 关键词 | buoyancy effect western boundary current South China Sea |
| DOI | 10.1029/2019JC015079 |
| 英文摘要 | The month-to-month variation of the winter South China Sea (SCS) western boundary current (WBC) along the western slope is examined using drifter observations, satellite altimetry data, and an ocean reanalysis. The most surprising phenomenon is that the WBC velocity at the sea surface reaches the maxima in November-December, which cannot be explained by wind forcing and Kuroshio intrusion alone. Analysis results demonstrate that buoyancy effect should be considered to explain the month-to-month variation besides wind-Kuroshio effects. In winter, cold-and-salty advection by the WBC from the north decreases/reverses the zonal density gradient in the seasonal pycnocline induced by wind forcing and Kuroshio intrusion and therefore weakens wind-Kuroshio-induced WBC. Buoyancy effect on the winter SCS WBC is opposite to wind-Kuroshio effects. In addition, buoyancy effect reaches the maximum in January, which is concurrent with wind-Kuroshio effects. As a result of their competition, the zonal density gradient in the seasonal pycnocline is maximum in November-December, resulting in the maximum surface velocity along the western slope occurring in November-December. This study demonstrates the importance of buoyancy forcing to the winter SCS WBC. |
| 资助机构 | foundation of China Ocean Mineral Resources RD Association [DY135-E2-2-02]; Scientific Research Fund of the Second Institute of Oceanography, MNR [JG1909, 14283]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41976003, 41976028, 41606017, 41621064, 91528304]; Program of Shanghai Academic/Technology Research Leader [17XD1400600] ; foundation of China Ocean Mineral Resources RD Association [DY135-E2-2-02]; Scientific Research Fund of the Second Institute of Oceanography, MNR [JG1909, 14283]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41976003, 41976028, 41606017, 41621064, 91528304]; Program of Shanghai Academic/Technology Research Leader [17XD1400600] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18212]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China 3.Univ Maine, Sch Marine Sci, Orono, ME USA 4.Minist Nat Resources, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou, Peoples R China 5.Fudan Univ, Inst Atmospher Sci, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Yunwei,Wang, Guihua,Xue, Huijie,et al. Buoyancy Effect on the Winter South China Sea Western Boundary Current[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(10):6871, 6885. |
| APA | Yan, Yunwei,Wang, Guihua,Xue, Huijie,Chai, Fei,&wghocean@yahoo.com.(2019).Buoyancy Effect on the Winter South China Sea Western Boundary Current.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(10),6871. |
| MLA | Yan, Yunwei,et al."Buoyancy Effect on the Winter South China Sea Western Boundary Current".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.10(2019):6871. |
入库方式： OAI收割
来源：南海海洋研究所
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