| 云南寒潮时空特征及变化分析 |
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| 引用本文： | 海云莎,田永丽,陈新梅.云南寒潮时空特征及变化分析[J].云南大学学报(自然科学版),2011(Z1). |
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| 作者姓名： | 海云莎 田永丽 陈新梅 |
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| 作者单位： | 云南大学资环学院;云南省气象台;云南省气象科技服务中心;云南气象科学研究所; |
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| 基金项目： | 云南省气象局技术开发项目资助(YB201001); 2011年度云南省气象局气候变化专项项目资助(QH201102); 干旱气象科学研究基金(IAM201012) |
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| 摘 要： | 应用1961～2008年共48 a云南125站气温资料,通过计算趋势系数等统计方法,分析全省寒潮的发生频次、时空分布特征及单站寒潮、总寒潮过程和区域寒潮过程的年代际变化及其环流特征.结果表明:单站寒潮频次呈东高西低分布;全省寒潮过程、区域寒潮过程和单站寒潮均为1月最多,2月和12月次之;省内寒潮频次在减少,东部减少趋势明显;环流分析发现在云南寒潮偏多发生年份,中高纬度地区500 hPa高度场较常年偏低,副热带高压较常年偏弱,850 hPa温度场为负距平.
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| 关 键 词： | 云南寒潮 空间分布 变化趋势 环流特征 |
Analysis on spatial distribution and temporal variation of cold wave in Yunnan |
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| HAI Yun-sha,TIAN Yong-li,CHEN Xin-mei.Analysis on spatial distribution and temporal variation of cold wave in Yunnan[J].Journal of Yunnan University(Natural Sciences),2011(Z1). |
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| Authors: | HAI Yun-sha TIAN Yong-li CHEN Xin-mei |
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| Institution: | HAI Yun-sha1,2,TIAN Yong-li3,CHEN Xin-mei4(1.Department of Atmosphere Science,Yunnan University,Kunming 650091,China,2.Meteorological Observatory of Yunnan Province,Kunming 650034,3.Meteorological Science and Technology Service Center of Yunnan,4.Yunnan Research Institute of Meteorology,China) |
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| Abstract: | Used the temperature data of 125 stations in Yunnan from 1961 to 2008,the occurrence frequency,the spatial and temporal distribution features of cold wave and the decadal variability and circulation features of the single-station cold wave and cold wave process were analysed by calculating the trends coefficient of statistical methods.The results indicate that the special character of the occurrence frequency in single station is higher in east than west,and in Yunnan is decreased,especially in the east of ... |
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| Keywords: | the cold wave of Yunnan spatial distribution variety trend circulation features |
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