地球系统模拟和混沌时间序列

地球系统是非线性的系统.为了模拟地球系统,我们就必须了解非线性科学的最新进展.本文从非线性科学角度论述了地球系统模拟中的几个关键问题,如尺度是分层次的,不同尺度之间存在着相似性及标度律,同时也存在差异性及非均匀性.为此还介绍了一些概念:吸引子、分维、信息和熵等.最后本文还说明如何从地球系统中所观测到的时间序列取得地球系统模拟所需要的信息.

EARTH SYSTEM MODELING AND CHAOTIC TIME SERIES

Earth system is a nonlinear one. In order to simulate Earth system, we must understand the new advance on nonlinear science. This paper discusses some key problem only from nonlinear science point of view. For example, the scale is hierarchical, there are self-similar and scaling laws between different scale phenomena, the geophysical field is inhomogeneous, etc. The newest concepts of nonlinear, science such as attractor, fractal, information and entropy are introduced. The necessary information simulated Earth system can be obtained from a single chaotic time series.