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气象:1995,21(1):19-22
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大气环流及南极海冰变异与热带风暴生成
Genesis of Tropical Cyclone Atmospheric Circulation and Variations of Antarctic Sea Ice
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中文摘要: 利用1973—1981年、1980—1986年格点资料及1973—1978年南极海冰资料及其它常规资料,分析了西北太平洋地区热带风暴生咸与全球大气环流及南极海冰年际变异的关系。结果指出:在东半球地区,南北两半球热带风暴生成的多寡,均与该地区越赤道气流的强弱,特别是45°E处越赤道气流的强弱关系密切。同时,也与南极海冰北界的年际变异直接有关。当南极出现“暖冬"、“冷夏"时,当年西北太平洋地区热带风暴生成总数偏多;反之亦然。
Abstract:An analysis of the relationship between the genesis of the tropical cyclones over the western North Pacific and the interannual variation of the global atmospheric circulations as well as the northern edge of the Antarctic sea ice was made by using the grid wind data during 1973-1981,1980-1986 and the Antarctic sea ice data during 1973-1978 as well as the conventional data.The results show that over the region of the Eastern Hemisphere the annual frequency of the tropical cyclones of the two Hemisphers is connected closely with the intensity of the cross equatorial flow (Eastern Hemisphere), particularly with that at 40°E. At the same time, it is closely connected with the interannual variation of the northern edge of the Antarctic sea ice.When there is a "warmer winter" and a "colder summer" in the Antarctic,there will be a higher annual frequency of the tropical cyclone over the western North Pacific.
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基金项目:国家南极科学考察研究项目资助
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引用文本:
李曾中,1995.大气环流及南极海冰变异与热带风暴生成[J].气象,21(1):19-22.
,1995.Genesis of Tropical Cyclone Atmospheric Circulation and Variations of Antarctic Sea Ice[J].Meteor Mon,21(1):19-22.