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| 对北极极涡的认识 | |
| 引用本文： | 孙兰涛,吴辉碇,李响.对北极极涡的认识[J].极地研究,2006,18(1):52-62. |
| 作者姓名： | 孙兰涛 吴辉碇 李响 |
| 作者单位： | 1. Department of Atmospheric Sciences,University of Illinois,Illinois 61801,USA 2. 国家海洋环境预报中心,北京 100081;国家海洋局极地科学重点实验室,中国极地研究中心,上海 200136 3. 物理海洋实验室,中国海洋大学,青岛 266003 |
| 基金项目： | 国家自然科学基金(40376006,40233032)资助项目。 |
| 摘 要： | 极涡是北极中上层对流层和平流层大气的持续性大尺度气旋性环流,它的活动和变化控制着泛极地半永久性活动中心和副极地短时间尺度的气旋活动。极涡强度变化直接关系到北极大气、海洋、海冰和生态环境,影响低层大气环流,影响副极地甚至中纬度天气。中国第2次北极科学考察期间正是北极平流层中上层暖性反气旋性环流向冷性气旋性环流转变和极涡建立时期。一些学者已通过平流层和对流层耦合机制的研究探索极涡变化对低层环流的作用。平流层爆发性增暖对极涡变化影响早已引起人们关注。本文概述我们对极涡的认识,总结近期有关极涡变化对低层环流的作用以及它对气候影响的机制研究的进展,并讨论对一些问题的看法。 |
| 关 键 词： | 北极 极涡 北极涛动 平流层和对流层 气候变化 |
| 收稿时间： | 2005-12 |
| 修稿时间： | 2006-02 |
OUR UNDERSTANDING OF ARCTIC VORTEX |
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| Sun Lantao,Wu Huiding,Li Xiang.OUR UNDERSTANDING OF ARCTIC VORTEX[J].Chinese Journal of Polar Research,2006,18(1):52-62. | |
| Authors: | Sun Lantao Wu Huiding Li Xiang |
| Institution: | 1.Department of Atmospheric Sciences, University of Illinois, Illinois 61801, USA;2.National Marine Environmental Forecasting Center, Beijing 100081 ,China, ;3.SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China; 4.Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China |
| Abstract: | The Arctic vortex is a persistent large-scale cyclonic circulation pattern in the middle and upper troposphere and the stratosphere. Its activity and variability are related to the semi-permanent active centers and the cyclone activity with the short-time scale in the pan-Arctic. Its variability in the strength, which is directly related to the atmosphere, ocean, sea ice and ecosystem in the Arctic, has an effect on the lower atmospheric circulation and affects the weather in the sub-Arctic and even at the middle latitudes. The transition of the circulation from a warm anticyclone to a cold cyclone occurred in the middle and upper stratosphere during 2003 Chinese Arctic Research Expedition. The mechanisms coupling the stratosphere and troposphere have been studied by some scientists for understanding the effect of the polar vortex change on the lower circulation. The effect of the stratospheric sudden warming on the polar vortex break down was found early in the fifties of the last century and has been taken great note. The Arctic Oscillation (AO), relating to the change of the Arctic vortex, has been used to study the effect of the Arctic vortex on the climatic change. The recent Arctic vortex research is simply reviewed in the paper. Our understanding of the Arctic vortex is given and some different view and questions are also discussed. |
| Keywords: | Arctic polar vortex Arctic Oscillation stratosphere and troposphere climate change |
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