滇西短时强降水的时空分布特征
Spatial and Temporal Distribution Characteristics of Short-time Heavy Rainfall in West Yunnan Province
许宏波 1谢屹然 2谢银剑3
作者信息
- 1. 云南省保山市气象局，云南保山678000
- 2. 云南省气象台，云南昆明650034
- 3. 剑川县职业高等中学，云南剑川671300
- 折叠
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。
Abstract
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.
关键词
短时强降水/时空分布/环境背景场/滇西Key words
Short-time heavy rainfall/Spatial and temporal distribution/Environmental background field/West Yunnan Province引用本文复制引用
基金项目
2014中国气象局预报员专项项目(CMAYBY2014-065)
国家自然科学基金(41305002)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据