热带气象学报2017，Vol.33Issue(1)：119-126,8.DOI:10.16032/j.issn.1004-4965.2017.01.013
华南热带气旋相关物理量场的线性及非线性统计分析研究
THE LINEAR AND NONLINEAR STATISTICAL STUDY OF WESTERN PACIFIC PHYSICAL FIELD WITH TROPICAL CYCLONES IN SOUTH CHINA
摘要
Abstract
Western Pacific sea surface temperatures (SST),sea level pressure (SLP),500 hPa geopotential height (HGT) were selected into a physical factors field,and the average frequency of each TC in the south of China,values of average annual lowest air pressure,and annual maximum wind speed were used as a physical field that were surveyed and calculated for the time from 1949 to 2013.Principal component analysis(PCA) and kemel principal component analysis(KPCA) algorithms were used to extract principal component factor fields.On this basis,the first six games of the principal components were taken for powerspectrum estimation and cohesion spectrum analysis.Finally,canonical correlation analysis(CCA) and kemel canonical correlation analysis(KCCA) algorithms were used for canonical correlation analysis on the factor field and physical field.The results show that based on KPCA the explained variance contribution rates of the first six components are higher than that with PCA.The first components of SST,SLP and HGT fields have periodic fluctuations of about 18 years.Meanwhile,for the fluctuation of 2 to 3 years,the cross correlation of oscillation frequency is the strongest.The nonlinear canonical correlation coefficient is higher than the linear coefficient.关键词
热带气旋/主成分/谱估计/周期/典型相关Key words
tropical cyclone/principal component/power spectrum estimation/period/canonical correlation分类
天文与地球科学引用本文复制引用
谭金凯,刘合香,陈燕璇..华南热带气旋相关物理量场的线性及非线性统计分析研究[J].热带气象学报,2017,33(1):119-126,8.基金项目
国家自然科学基金(41665006、 41465003、 11561009) （41665006、 41465003、 11561009）
广西科学研究与技术开发项目(1355010-8、桂科合1599005-2-13) （1355010-8、桂科合1599005-2-13）
广西研究生教育创新计划项目(YCSZ2015185)共同资助 （YCSZ2015185）
