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Different roles of Ekman pumping in the west and east segments of the South China Sea Warm Current |
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| Authors: | WANG Qiang WANG Yinxi BO Hong ZHOU Weidong and WANG Dongxiao |
| Institution: | 1. Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China 2. South China Sea Marine Engineering and Environment Institute of State Oceanic Administration,Guangzhou 510300, China 3. Virginia Institute of Marine Science, College of William and Mary, VA 23062, USA 4. Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
| Abstract: | A three-dimensional model is used to investigate the mechanism of the South China Sea (SCS) winter counter-current (also known as the SCS Warm Current, or the SCSWC), which flows against the wind. The model can reproduce the structure of the band-like currents over the northern shelf of the SCS, including the westward coastal current and slop current, and the SCSWC sandwiched in between. Sensitivity experiments are designed to understand the different roles of Ekman pumping of the SCSWC at different longitude. The results show that the Ekman pumping drives the SCSWC in the west segment. In the east, it is not the Ekman pumping but the intrusion of the Kuroshio that drives the SCSWC. |
| Keywords: | SCSWC Ekman pumping northern South China Sea numerical model |
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