K-MEANS CLUSTERING FOR CLASSIFICATION OF THE NORTHWESTERN PACIFIC TROPICAL CYCLONE TRACKS  

作　　者：余锦华 郑颖青 吴启树 林金凎 龚振彬 

机构地区：[1]Key Laboratory of Meteorological Disaster of Ministry of Education,Atmospheric Sciences Institute,Nanjing University of Information Science&Technology,Nanjing 210044 China [2]Fuzhou Meteorological Bureau,Fuzhou 350014 China

出　　处：《Journal of Tropical Meteorology》2016年第2期127-135,共9页热带气象学报（英文版）

基　　金：National Basic Research Program of China(973 Program)(2015CB453200),2012CB955903);National Natural Science Foundation of China(41575083,41575108);Jiangsu Education Science Foundation(13KJA170002)

摘　　要：Based on the Joint Typhoon Warning Center(JTWC) best-track dataset between 1965 and 2009 and the characteristic parameters including tropical cyclone(TC) position,intensity,path length and direction,a method for objective classification of the Northwestern Pacific tropical cyclone tracks is established by using k-means Clustering.The TC lifespan,energy,active season and landfall probability of seven clusters of tropical cyclone tracks are comparatively analyzed.The characteristics of these parameters are quite different among different tropical cyclone track clusters.From the trend of the past two decades,the frequency of the western recurving cluster(accounting for 21.3% of the total) increased,and the lifespan elongated slightly,which differs from the other clusters.The annual variation of the Power Dissipation Index(PDI) of most clusters mainly depended on the TC intensity and frequency.However,the annual variation of the PDI in the northwestern moving then recurving cluster and the pelagic west-northwest moving cluster mainly depended on the frequency.Based on the Joint Typhoon Warning Center（JTWC） best-track dataset between 1965 and 2009 and the characteristic parameters including tropical cyclone（TC） position,intensity,path length and direction,a method for objective classification of the Northwestern Pacific tropical cyclone tracks is established by using k-means Clustering.The TC lifespan,energy,active season and landfall probability of seven clusters of tropical cyclone tracks are comparatively analyzed.The characteristics of these parameters are quite different among different tropical cyclone track clusters.From the trend of the past two decades,the frequency of the western recurving cluster（accounting for 21.3% of the total） increased,and the lifespan elongated slightly,which differs from the other clusters.The annual variation of the Power Dissipation Index（PDI） of most clusters mainly depended on the TC intensity and frequency.However,the annual variation of the PDI in the northwestern moving then recurving cluster and the pelagic west-northwest moving cluster mainly depended on the frequency.

关 键 词：tropical cyclone classification of tracks K-means clustering character of cluster 

分 类 号：P444[天文地球—大气科学及气象学]