| 2001年5月云南罕见强降水天气过程的成因 |
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| 引用本文： | 普贵明,鲁亚斌,海云莎.2001年5月云南罕见强降水天气过程的成因[J].气象,2002,28(6):48-51. |
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| 作者姓名： | 普贵明 鲁亚斌 海云莎 |
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| 作者单位： | 云南省气象台,昆明,650034 |
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| 摘 要： | 导致2001年5月云南5次强降水和5月降水特多的原因，主要是由于500hPa青藏高原东南侧多次生成的切变与副高外围西南暖湿气流和地面弱冷空气影响所致。伊朗高压快速东移上青藏高原，促使500hPa和700hPa高压环流长时间盘锯在青藏高原上，冷空气和高原横切变不断影响云南，是云南雨季特早和强降水形成的主要原因。
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| 关 键 词： | 2001年 5月 云南 强降水天气过程 成因 高原横切变 西南急流 雨季 洪涝 |
Analysis of the Reason for Rarely Severe Rainfall of Yunnan in May 2001 |
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| Pu Guiming\ Lu Yabin\ Hai Yunsha.Analysis of the Reason for Rarely Severe Rainfall of Yunnan in May 2001[J].Meteorological Monthly,2002,28(6):48-51. |
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| Authors: | Pu Guiming\ Lu Yabin\ Hai Yunsha |
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| Abstract: | The reasons for five severe rain events and unusually great rainfall in May 2001 in Yunnan area are mainly caused by transversal shear produced at the southeastern side of the Qinghai Xizang high on 500hPa, the warm wet southwest air current in the periphery of subtropical high and weakly surface cold air.Furthermore,Iran high moves eastward quickly to Qinghai Xizang Plateau impelling high circulation on 500hPa and 700hPa settled in the Plateau for a long time,cold air and plateau transversal shear affects Yunnan area conscantly,which are main reasons of unusually early rainy season and formation of severe rainfall. |
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| Keywords: | plateau transversal shear\ southwestly jet\ rainy season\ flooding |
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