黄河中游强暴雨过程的中低纬度环流特征和水汽输送  

THE LOW-AND MID-LATITUDE CIRCULATION CHARACTERISTICS AND MOISTURE TRANSFER DURING THE RAINSTORMS PERIOD IN THE MIDDLE REACHES OF THE HUANGHE RIVER

作　　者：董立清[1] 任金声[1] 徐瑞珍[1] 王建忠[1] 

机构地区：[1]国家气象中心,中国气象科学研究院

出　　处：《应用气象学报》1996年第2期160-168,共9页Journal of Applied Meteorological Science

基　　金：85-906科技攻关项目08课题

摘　　要：利用１９８１～１９９１年６～９月气象资料，用合成分析方法研究了黄河中游强暴雨过程．根据环流特征，它可归纳为汛期暴雨型和非汛期暴雨型两大类．重点分析了每种类型的水汽通量、水汽通量散度、风矢量等的分布．结果表明，两种类型中，水汽源地，输送路径以及辐合强度等都有很大的差异．Based on the meteorological data from June to September,1981￣1991,a study on low-and mid-latitude circulation characteristics and moisture transfer during the rainstorms period in the middle reaches of the Huanghe River is made by composite analysis.According to the circulation systems associated with 11 cases of extremely torrential rains,two types of rainstorm processes would be summarized.One appears in the flood season(mid-summer),another is in the early or late summer.The distributions of moisture flux,devergence of moisture flux and wind vector for the two types are analysed,respectively.The results show that there are great differences in the source regions,transport tracks and convergence intensities of water vapour between the two types of rainstorms.

关 键 词：黄河中游 暴雨 环流特征 水汽输送 中低纬度 

分 类 号：P426.62[天文地球—大气科学及气象学] P434.5