2006-2015年成都市区域性暴雨统计分析及其大尺度环流背景  

Statistical Analysis and Large-scale Circulation Background of Regional Rainstorm in Chengdu during 2006-2015

作　　者：宋雯雯 唐钱奎 

机构地区：[1]高原与盆地暴雨旱涝灾害四川省重点实验室,成都610072 [2]四川省气象服务中心,成都610072 [3]四川省成都市气象局,成都610071

出　　处：《高原山地气象研究》2017年第1期19-24,共6页Plateau and Mountain Meteorology Research

基　　金：成都市气象局业务科技研究课题(2016-5);四川省气象局青年基金(川气课题2015-青年-13)

摘　　要：利用2006~2015年成都地区国家站及区域站20时~20时24小时地面实况降雨量资料、常规观测资料、NCEP1°×1°再分析资料对成都市区域性暴雨进行统计分析,得出:这一时期成都地区共有43例区域性暴雨发生,次数最多的是在2013年,发生季节以7月为最多(占总次数的49%)。根据区域性暴雨影响系统的不同,将其简单分为3种类型,分别是:低涡型、高空槽和切变线型、副热带高压边缘型。3种类型暴雨的发生次数、持续时间均有不同,暴雨次数所占比例分别为40%、46%、14%,持续时间大多为1天。同时选取3个历史个例分析了不同类型区域性暴雨的大尺度环流背景特征。By using the 20：00 ？20：00 24hrs ground actual precipitation data of national station and regional station in Chengdu area during 2006 ？2015,the conventional observation data and the NCEP10 X l0 reanalysis data, statistical analysis was performed for the regional rainstorm in Chengdu. The results showed 43 cases of regional rainstorm occurred in Chengdu area dur-ing this period, and most times in 2013. The regional rainstorm occurred mostly in July （49% of the total times）. Based on the different influencing system of the regional rainstorms, they could be simply divided into three types, which were low vortex type, upper trough and shear line type and subtropical high edge type. The occurring times and durations of the three types were differ-ent, the proportion of the occurring times were 40% , 46% and 14% , and the durations were mostly one day. Characteristics of large - scale circulation background of different types of regional rainstorm were analyzed for three history cases.

关 键 词：区域性暴雨 统计分析 大尺度环流背景 

分 类 号：P466[天文地球—大气科学及气象学]