| Argo floats revealing bimodality of large-scale mid-depth circulation in the North Atlantic |
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| 作者姓名： | CHU Peter C IVANOV Leonid M MELNICHENKO Oleg V LI Rongfeng |
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| 作者单位： | CHU Peter C（Department of Oceanography, Naval Postgraduate School, Monterey, California, USA） ;
IVANOV Leonid M（Department of Oceanography, Naval Postgraduate School, Monterey, California, USA） ;
MELNICHENKO Oleg V（International Pacific Research Center, University of Hawaii at Manoa, Hawaii, USA） ;
LI Rongfeng（Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China） ; |
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| 基金项目： | The Naval Postgraduate School and the National Natural Science Foundation of China，The Office of Naval Research and the Naval Postgraduate School，国家自然科学基金，中国科学院资助项目 |
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| 摘 要： | Analysis of Argo float trajectories at 1 000 m and temperature at 950 m in the North Atlantic between November 2003 and January 2005 demonstrates the existence of two different circulation modes with fast transition between them. Each mode has a pair of cyclonic - anticyclonic gyres. The difference is the location of the cyclonic gyre. The cyclonic gyre stretches from southeast to northwest in the first mode and from the southwest to the northeast in the second mode. The observed modes strongly affect the heat and salt transport in the North Atlantic. In particular, the second mode slows down the westward transport of the warm and saline water from the Mediterranean Sea.
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| 关 键 词： | 大西洋 中尺度环流 生物特征 光谱分析 |
| 收稿时间： | 2007/10/5 0:00:00 |
| 修稿时间： | 2008/1/19 0:00:00 |
Argo floats revealing bimodality of large-scale mid-depth circulation in the North Atlantic |
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| CHU Peter C,IVANOV Leonid M,MELNICHENKO Oleg V,LI Rongfeng.Argo floats revealing bimodality of large-scale mid-depth circulation in the North Atlantic[J].Acta Oceanologica Sinica,2008,27(2):1-10. |
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| Authors: | CHU Peter C IVANOV Leonid M MELNICHENKO Oleg V and LI Rongfeng |
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| Institution: | 1.Department of Oceanography, Naval Postgraduate School, Monterey, California, USA2.International Pacific Research Center, University of Hawaii at Manoa, Hawaii, USA3.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Analysis of Argo float trajectories at 1000 m and temperature at 950 m in the North Atlantic between November 2003 and January 2005 demonstrates the existence of two different circulation modes with fast transition between them. Each mode has a pair of cy-clonic - anticyclonic gyres. The difference is the location of the cyclonic gyre. The cyclonic gyre stretches from southeast to north-west in the first mode and from the southwest to the northeast in the second mode. The observed modes strongly affect the heat and salt transport in the North Atlantic. In particular, the second mode slows down the westward transport of the warm and saline water from the Mediterranean Sea. |
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| Keywords: | Argo trajectory data Atlantic Ocean biomodality mid-depth circulation optimal spectral decomposition |
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