| 摘要: |
| 南极绕极流(ACC)是南大洋中最显著的流动，流量超过130×106m3/s (Nowlin et al.，1986)。传统认为，由于以东向运动为主的ACC的存在极大地阻碍了南大洋中上层的南北向物质和能量的交换，绕极流区的经向输运是非常小的。但是近些年的研究发现，穿过ACC的通量并不是可以忽略不计的，它对维持南极和亚南极区的动力和热力平衡起着重要作用，在全球气候系统中也有着深刻的影响(Doos et al.，1994)。 |
| 关键词: 南极绕极流 经向输运 数值模式 |
| DOI： |
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| 基金项目:中国科学院海洋研究所调查研究报告第4195号。国家自然科学基金资助项目，49876009号。 |
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| MERDIONAL TRANSPORT OF THE ANTARCTIC CIRCUMPOLAR CURRENT |
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SHI Jiuxin1, LE Kentang1, YIN Baoshu1, BYUNG Ho Choi2
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1.Institute of Oceanology, The Chinese Academy of Sciences;2.Sungkyunkwan University
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| Abstract: |
| A coupled sea ice-mixed layer-isopycnal model (OPYC, alias PIPE) was applied to simulate the circulation in the Southern Ocean. The model domain covered the Southern Ocean south of 24°S. The model was first spun up in a coarse resolution grid (2°longitude×1°latitude) for 40 years running; then was shifted in to a fine resolution grid (1°longitude×0.5°latitude with a focus in the Indian Sector and the Antarctic Marginal Sea) for additional 5 years running in order to create the detailed circulation pattern in the area of interest. The simulated annual averaged volume transport through Drake Passage was 145.3×106 m3/s and more similar to the observed result (134×106 m3/s) than FRAMS result (about 200×106 m3/s). The simulated results of circulation and sea ice also agreed with those of previous results. The meridional stream function and meridional transport obtained from the simulated results were used to study the meridional characteristics of the Antarctic Circumpolar Current (ACC). |
| Key words: the Antarctic Circumpolar Current simulation model |
