摘要
利用2010-2013年滇西12个自动气象站逐时降水资料和高空观测资料，研究了滇西短时强降水的时空分布特征，并分析典型短时强降水过程的环境背景场特征。结果表明，滇西短时强降水的频次的空间变化总体趋势呈南北向分布，大值中心在龙陵站；滇西短时强降水频次有显著的年变化；短时强降水集中发生在5-9月；日变化呈多峰型，最强峰值出现在04：00-05：00；滇西短时强降水存在5种环流概念模型。
Hourly precipitation data at 12 stations and radiosonde data in west Yunnan province from 2010 to 2013 were used to statistically com-pute the spatial and temporal distributions of short time heavy rainfall （ hereafter STHR） . Then, the environmental background characteristics of typical STRH were analyzed. The results showed that the general trend of spatial variation of STRH frequency in west Yunnan province exhibited south-north distribution, the maximum was in Longling station. The frequency of STRH in west Yunnan Province showed significant yearly varia-tions. The STRH mainly occurred from May to September. The diurnal variation of STRH showed a maximum around 4：00-05：00. There were five kinds of circulation conceptual models during STHR.
出处
《安徽农业科学》
CAS
2016年第16期190-195,共6页
Journal of Anhui Agricultural Sciences
基金
2014中国气象局预报员专项项目(CMAYBY2014-065)
国家自然科学基金项目(41305002)
关键词
短时强降水
时空分布
环境背景场
滇西
Short-time heavy rainfall
Spatial and temporal distribution
Enviromnental background field
West Yunnan Province
