摘要
本文利用广州1873—1980年共108年的月平均气温时间序列资料,在拓展了的三维相空间中,用Wolf的方法,求出了在不同参数条件下的李亚普诺夫指数λ_1。从中发现,对每一组参数,均得到λ_(1,2)>0(其中λ_1>λ_2),λ_3<0。这说明我国季风区短期气候演化存在着浑沌吸引子,因而气候应该分享经历着浑沌力学行为的体系所具有的那种本征的演化特征。
Based on Guangzhou 1873-1980 monthly mean temperature time series in an extended 3-D phase space, Lyapunov exponent λ1 is calculated for different parameters following the method in Wolf et al. (1985). Results show that for each set of parameters λ1,2>0 (where λ,>λ2) and λ3 < 0 are acquired. Our further investigation indicates that chaotic attractors exist in the short-range evolution in the climate of China's monsoon area, in good agreement with the fractional dimensios obtained by calculating the same data (peng et al. , 1989), and thereby it is shown that climate is supposed to share characteristic evolutional features typical of a system experincing behavior of chaotic mechanics.
出处
《热带气象》
CSCD
1990年第3期210-217,共8页
