Water exchange between the subpolar and subtropical North Pacific in an OGCM

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• 作者：Sun Fengying (1)
  Kim Kim (1)
  Huang Boyin (1)
  Wang Dongxiao (2)
  
• 关键词：water exchange ; CFC concentration ; North Pacific
• 刊名：Science China Earth Sciences
• 出版年：2004
• 出版时间：January 2004
• 年：2004
• 卷：47
• 期：1
• 页码：37-48
• 全文大小：524KB
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• 作者单位：Sun Fengying (1)
  Kim Kim (1)
  Huang Boyin (1)
  Wang Dongxiao (2)
  
  1. University of Wisconsin-Madison, 1225 Dayton St., WI-53706, Madison, USA
  2. Laboratory for Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China
  
• ISSN：1869-1897

文摘

The water exchange between the subpolar and subtropical gyres of the North Pacific is demonstrated by the simulation of chlorofluorocarbon (CFC) using an ocean general circulation model. The simulated CFC concentration in the North Pacific is in good agreement with observations. The water exchange is clearly illustrated by the tongues of CFC concentration. The subpolar waters with high CFC are transported southward into the eastern subtropical gyre, whereas the subtropical waters with low CFC are transported northward into the western subpolar gyre. The simulated exchange transport along 42°N in the layer of σθ < 26.8 indicates that the northward mass transport is about 15 Sv (1 Sv = 106 m3 -s ) west of 165°E, and about 5 Sv between 175°W and 150°W. The southward mass transport is about 5 Sv between 165°E and 175°W, and about 2 Sv east of 150°W.