2007年7月云南洪涝灾害天气原因分析  

Analysis of Flood Disaster Weather in Yunnan in July 2007

作　　者：罗冬莉 赵尔旭 解莉燕[2] 徐八林[2] LUO Dongli;ZHAO Erxu;XIE Liyan;XU Balin(Yunnan Center of Meteorological Service,Kunming 650034,China;Yunnan Provincial Meteorological Administration,Kunming 650034,China)

机构地区：[1]云南省气象服务中心,云南昆明650034 [2]云南省气象局,云南昆明650034

出　　处：《灾害学》2018年第2期10-13,共4页Journal of Catastrophology

基　　金：国家自然科学基金项目(U1133603;41440034;41365007;41375059);云南省气象局科研项目(BZ201701)

摘　　要：运用NCAR/NCEP再分析数据和云南省124站日降水资料,分析了孟加拉湾西南季风对云南降水的影响,以2007年7月18-20日云南出现全省性大雨过程为例,研究分析了该过程造成的洪涝灾害的天气原因,发现孟加拉湾季风槽前的西南水汽通道的建立有助于造成云南较大降水过程,热带地区季风涌向北的传递是造成2007年7月云南全省性降水过程的重要因素。洪涝灾害天气通常是局地小尺度的,此次灾害天气过程表明局部地区的灾害天气也常有大尺度的天气背景影响。Based on the data of NCAR/NCEP reanalysis and the daily precipitation data of 124 stations in Yunnan Province,the effects of the southwest monsoon in the Bay of Bengal on precipitation in Yunnan were analyzed.Taking the whole heavy rain process in Yunnan province from July 18 to 20,2007,this process caused the more serious flood disaster in Yunnan.This paper studies and analyzes the weather causes of the flood disaster and finds that the establishment of the southwest water vapor channel before the monsoon trough in the Bay of Bengal contributes to the process of large precipitation in Yunnan.The transmission of the monsoon in the tropics to the north is the result.In July 2007,there was an important factor in the process of precipitation.Floods are usually small scale,and the weather process shows that the weather in some areas often has a large scale weather background.

关 键 词：洪涝灾害 季风涌 孟加拉湾西南季风 云南 

分 类 号：X43[环境科学与工程—灾害防治] P426[天文地球—大气科学及气象学]