夏季南海对流活动对北半球中低纬大气环流的影响及其可能途径  

THE INFLUENCE OF CONVECTIVE ACTIVITIES OVER SOUTH CHINA SEA ON THE NH MID-LOW LATITUDE ATMOSPHERE AND ITS POSSIBLE MECHANISM

作　　者：王建德[1] 唐东升[1] 

机构地区：[1]南京气象学院

出　　处：《热带气象学报》1994年第1期78-84,共7页Journal of Tropical Meteorology

基　　金：国家自然科学基金

摘　　要：利用１９８４年夏季的ＥＣＭＷＦ／ＷＭＯ逐日资料及ＯＬＲ资料，采用带通滤波方法，分析了南海对流活动对北半球中低纬大气环流的影响，结果表明，南海对流活动的低频变化对我国南方地区的大气环流有显著影响，南海对流活动首先影响印尼附近的上升支的强度，然后通过南北半球中低纬地区对而活动相互作用影响西太平洋副热带高压的强度和位置，从而影响我国南方的天气。Using ECMWF/WMO daily data and OLR data for the summer of 1984, the influence of convective activities over South China Sea on the north hemisphere mid-low latitude atmosphere are studied through band-pass filtering. Results show that the influence of intraseasonal oscillation of convective activities over South China Sea on the atmosphere circulation over South of China's mainland is seen first in the strength of upward flow ncar Indianesia first, then in the position and strength of subtropical high in West Pacific and therefore influence synoptic condition of South of China's mainland.

关 键 词：低频振荡 对流活动 南海 大气环流 北半球 

分 类 号：P434[天文地球—大气科学及气象学]