夏半年大气低频振荡与西北太平洋台风路径  

ATMOSPHERE AND OCEAN LOW-FREQUENCY OSCILLATION AND THEIR EFFECTS ON TROPICAL CYCLONE TRACKS OVER THE NORTHWESTERN PACIFIC

作　　者：胡坚[1] 王玉清[1] 

机构地区：[1]上海台风研究所,200030

出　　处：《气象学报》1992年第4期422-428,共7页Acta Meteorologica Sinica

基　　金：上海青年科学基金

摘　　要：本文利用一个多级数字滤波器,讨论了1980年5—10月期间,大气季节内低频振荡(30—50d周期)对西北太平洋热带气旋路径的影响。结果表明,这种影响是明显的。在秋季,还存在一支源于高纬北美地区的波列,其影响可以向西、向南一直传播至东亚低纬区域,它对于形成转向路径时期的环流形势起了重要作用。The effect of atmospheric intra-seasonal low-frequency oscillation (30-50 day) during the period from May to October, 1980 on tropical cyclone tracks are analysed. The result shows that this effect is identical. Meanwhile,in autumn, there exists a wave train which can propagate from North American at high latitudes up to East Asia at low latitudes. This wave train plays a significant role in bringing about circulation situation of the recurving path.

关 键 词：大气 低频振荡 太平洋 台风 路径 

分 类 号：P433[天文地球—大气科学及气象学]