西北太平洋风场对台风路径的影响  

THE EFFECTS OF FLOW PATTERNS OVER THE NORTHWEST PACIFIC ON TYPHOON TRACKS

作　　者：王志烈[1] 胡坚[1] 丁一汇 

机构地区：[1]上海台风研究所 [2]国家气象局气象科学研究院

出　　处：《应用气象学报》1991年第4期362-368,共7页Journal of Applied Meteorological Science

摘　　要：本文着眼于西北太平洋对流层的风场,分析了西北太平洋环境流场对台风路径的影响。所研究的七类正常台风路径,副热带高压的反气旋环流是它们的直接影响系统。西风环流,尤其是中、高纬度高层西风的分布及其变化对于形成不同类型的台风路径亦起了很重要的作用。分析还发现,台风有沿着对流层深层暖区轴线,按照热成风方向移动的趋势。Based on the analysis of wind field in the troposphere over the Northwest Pacific,the effectsof the environmental flow—patterns on typhoon tracks have been examined.For seven categoriesof normal tracks of typhoons,the anticyclonic circulation of the subtropical high over the North-west Pacific is believed to be the key circulation feature directly affecting the typhoon tracks.Thecirculation features in the westerlies,especially,distribution and variation of the upper—levelwesterlies play an important role in controlling the different tracks.The analysis further indicatesthat typhoons tend to move along the axis line of warm area of deep tropospheric layer in the di-rection of the thermal wind.

关 键 词：西北太平洋 台风路径 环流场 热带高压 热成风 反气旋环流 引导气流 环境场 纬向风 涡度 

分 类 号：P4[天文地球—大气科学及气象学]