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| 利用气候态水文数据Hydrobase II分析北欧海深层水的分布与输运 | |
| 作者姓名： | HE Yan ZHAO Jinping LIU N WEI Zexun LIU Yahao LI Xiang |
| 作者单位： | Key Laboratory of Polar Oceanography and Global Ocean Change, Ocean University of China, Qingdao 266100, China;Laboratory of Marine Science and Numerical modeling, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,Key Laboratory of Polar Oceanography and Global Ocean Change, Ocean University of China, Qingdao 266100, China,Laboratory of Marine Science and Numerical modeling, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,Laboratory of Marine Science and Numerical modeling, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China,Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
| 基金项目： | The Key Project of Chinese Natural Science Fundation under contract No.41330960;the Chinese Polar Environment Comprehensive Investigation and Assessment Programmes,State Oceanic Administration of China under contract Nos CHINARE2014-03-01 and CHINARE2014-04-03;the Public Science and Technology Research Funds Projects of Ocean under contract No.201205007-4 |
| 摘 要： | Deep water in the Nordic seas is the major source of Atlantic deep water and its formation and transport play an important role in the heat and mass exchange between polar and the North Atlantic. A monthly hydrological climatology—Hydrobase II—is used to estimate the deep ocean circulation pattern and the deep water distribution in the Nordic seas. An improved P-vector method is applied in the geostrophic current calculation which introduces sea surface height gradient to solve the issue that a residual barotropic flow cannot be recognized by traditional method in regions where motionless level does not exist. The volume proportions, spatial distributions and seasonal variations of major water masses are examined and a comparison with other hydrological dataset is carried out. The variations and transports of deep water are investigated based on estimated circulation and water mass distributions. The seasonal variation of deep water volume in the Greenland Basin is around 22×103 km3 whereas significantly weaker in the Lofoten and Norwegian Basins. Annual downstream transports of about 1.54×103 and 0.64×103 km3 are reported between the Greenland/Lofoten and Lofoten/Norwegian Basins. The deep water transport among major basins is generally in the Greenland-Lofoten-Norwegian direction. |
| 关 键 词： | the Nordic seas deep water modified P-vector method Hydrobase Ⅱ |
| 收稿时间： | 2014/4/10 0:00:00 |
| 修稿时间： | 8/7/2014 12:00:00 AM |
Deep water distribution and transport in the Nordic seas from climatological hydrological data |
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| HE Yan,ZHAO Jinping,LIU N,WEI Zexun,LIU Yahao,LI Xiang.Deep water distribution and transport in the Nordic seas from climatological hydrological data[J].Acta Oceanologica Sinica,2015,34(3):9-17. | |
| Authors: | HE Yan ZHAO Jinping LIU N WEI Zexun LIU Yahao and LI Xiang |
| Institution: | 1. Key Laboratory of Polar 0ceanography and Global 0cean Change, 0cean University of China, Qingdao 266100, China 2. Laboratory of Marine Science and Numerical modeling, The First Institute of 0ceanography, State 0ceanic Administration, Qingdao 266061, China 3. Key Laboratory of 0cean Circulation and Waves, Institute of 0ceanology, Chinese Academy of Sciences, Qingdao 266071, China |
| Abstract: | Deep water in the Nordic seas is the major source of Atlantic deep water and its formation and transport play an important role in the heat and mass exchange between polar and the North Atlantic. A monthly hydrological climatology—Hydrobase II—is used to estimate the deep ocean circulation pattern and the deep water distribution in the Nordic seas. An improved P-vector method is applied in the geostrophic current calculation which introduces sea surface height gradient to solve the issue that a residual barotropic flow cannot be recognized by traditional method in regions where motionless level does not exist. The volume proportions, spatial distributions and seasonal variations of major water masses are examined and a comparison with other hydrological dataset is carried out. The variations and transports of deep water are investigated based on estimated circulation and water mass distributions. The seasonal variation of deep water volume in the Greenland Basin is around 22×103 km3 whereas significantly weaker in the Lofoten and Norwegian Basins. Annual downstream transports of about 1.54×103 and 0.64×103 km3 are reported between the Greenland/Lofoten and Lofoten/Norwegian Basins. The deep water transport among major basins is generally in the Greenland-Lofoten-Norwegian direction. |
| Keywords: | the Nordic seas deep water modified P-vector method Hydrobase II |
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