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中文摘要: 分析2001年云南雨季开始期东南亚环流形势的逐日演变，并用OLR资料分析了雨季开始前东南亚对流活动的逐日演变。指出云南雨季开始受孟加拉湾季风影响，孟加拉湾季风爆发早且偏强，导致云南2001年雨季开始偏早，雨量偏多，在预报云南雨季开始时东南亚地区环流的季节调整及对流活动的北上应是重要因素。
中文关键词: 孟加拉湾季风，云南雨季开始，环流形势，OLR资料
Abstract:The circulation evolution and the convective activity of the southeast Asia region before the rainy season for Yunnan in 2001 is analyzed. The rainy season beginning of Yunnan is influenced by the summer monsoon of the BOB, the Bay of Bengal monsoon onset is earlier and stronger so that the rainy season is earlier and the rainfall is more in 2001. The seasonal adjustment and the convective activity migration to north of the southeast Asia region is an important factor to forecast the rainy season beginning of Yunnan.
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基金项目:国家“十五”重中之重科技攻关项目云南专题“滇中中尺度灾害性天气监测预警系统科学试验及应用研究”资助。
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引用文本：
郑建萌,段旭,2005.2001年云南雨季开始偏早与孟加拉湾季风爆发的关系[J].气象,31(2):59-63.
,2005.The Bengal Bay Monsoon Onset and Its Relationship with Rainy Season of Yunnan in 2001[J].Meteor Mon,31(2):59-63.
郑建萌,段旭,2005.2001年云南雨季开始偏早与孟加拉湾季风爆发的关系[J].气象,31(2):59-63.
,2005.The Bengal Bay Monsoon Onset and Its Relationship with Rainy Season of Yunnan in 2001[J].Meteor Mon,31(2):59-63.