【摘要】 将TOMS测量的北半球不同纬度各纬向平均逐日O。总量作为无规序列,利用时滞方法重构序列的相空间吸引子,计算其系统状态演化过程中形成的整体结构特征.结果表明,各纬度O3层系统吸引子都具有非整数分维结构；此外,在完整的Lpapunov指数谱中,所有指数分量之和均为负值,且最大指数分量总是正值.反映出O3层系统相空间总体上是收缩的,同时提供了存在奇怪吸引子的证据,表征O3层系统的演化是一种耗散混饨运动.这对于进一步应用非线性动力系统理论和方法,深入研究O3层系统的动力学特征具有重要意义.更多还原

【Abstract】 The zonal average day-to-day total ozone of different latitudes in NorthernHemisphere, which is observed by the TOMS (Total Ozone Mapping Spectrometer)instrument on the Nimbus 7 spacecraft, is regarded as a random time series. Then theattractor of ozone layer system is reconstructed by means of method of temporal de-lay in phase space, and character of general structure is computed- The results showthat all incidence dimensions are fractional. In the complete spectrum of Lyapunov exponents the largest Lyapunov exponent is always positive, but the sum of all expo-nents is a minus qllantity. All of these indicate that variations in the ozone layer ischa0tic. It is valuable in theory and practice to study the change of ozone layer bythe use of noulinear dynamcal model.更多还原