云南主汛期强降水过程年代际变化及其环流特征分析  

THE INTERDECADAL CHANGE OF VERY HEAVY RAINFALL PROCESS IN MAIN FLOOD PERIOD OF YUNNAN PROVINCE AND ITS CIRCULATION CHARACTERISTICS

作　　者：陶云[1] 刘瑜[1] 朱天禄[1] 

机构地区：[1]云南省气象台,昆明650034

出　　处：《气象科学》2003年第3期308-313,共6页Journal of the Meteorological Sciences

基　　金：云南省"十五"攻关项目 (滇中中尺度灾害性天气监测预警系统科学实验及应用研究 )资助

摘　　要：应用云南 196 1～ 2 0 0 0年共 4 0 a1～ 12月的全省 12 5个气象站逐日降水资料 ,统计了云南主汛期 (6～ 8月 )全省性强降水过程总次数 ,并分析了强降水过程的年代际变化及其环流特征。结果表明 :1971年以前 ,云南主汛期处于强降水过程偏多的年代 ,1972年至 1992年云南主汛期处于强降水过程相对偏少的年代 ,1992年之后 ,云南主汛期又转为强降水过程偏多时期。在云南主汛期强降水过程偏多和偏少时期 。Used the day by day precipitation data monthly (1961～1997)of 125 stations of Yunnan Province,the total numbers of very heavy rainfall process(June～August) in Yunnan main flood period were added and its interdecadal change and circulation characteristics were studied.The results indicated that there were more very heavy rainfall process which took place in the Yunnan main flood period before 1971,there were fewer very heavy rainfall process which took place in the Yunnan main flood period from 1972 to 1992,and there were more very heavy rainfall process which took place again in the Yunnan main flood period after 1992.The differences of the circulation characteristics were obvious between the more very heavy rainfall process and the fewer very heavy rainfall process in the Yunnan main flood period.

关 键 词：云南(6~8月)主汛期 强降水过程 年代际 环流特征 

分 类 号：P458[天文地球—大气科学及气象学]