长江中下游春季连阴雨及厄尔尼诺年的环流背景  

The steady rain over the middle and lower reaches of Changjiang River in a spring and the back ground to the circulation in the El-Nino years

作　　者：施宁[1] 

机构地区：[1]江苏省气象科学研究所

出　　处：《气象》1990年第12期8-14,共7页Meteorological Monthly

基　　金：国家气象局"长江中下游春季连阴雨;连晴天气研究"课题资助

摘　　要：本文应用1975—1983年OLR资料以及1980—1983年ECMWF7层资料,分析了长江中卞游春季连阴雨过程中热带和副热带系统的基本特征及与连晴过程的差异,着重讨论了厄尔尼诺年热带和副热带异常的环流背景以及对长江中下游过渡季节持续降水的影响,揭示了一些有意义的事实。In this paper, outgoing longwave radiation (OLR) data from 1975 to 1983 and ECMWF seven layers data from 1980 to 1983 are used to investigate the basic features of the tropical and the subtropical system in the steady rain processes over the middle-lower reaches of the Changjiang River in spring and their difference with those in the steadily clear processes. Furthermore,the anomalous circulation background over the tropics and the subtropics in the El-Nino years and its effect on the steady rain over the middle-lower reaches of the Changjiang River in the tran-sition seasons are discussed emphatically, and some significant facts are revealed.

关 键 词：连阴雨 环流背景 春季 El-Nino年 

分 类 号：P458.11[天文地球—大气科学及气象学]