【摘要】 改进了简单胞映射算法,应用于具有外源强迫特性的Saltzman气候模式——能量平衡气候模式的计算分析,从而有效、动态和直观地揭示大气环境中海温、海冰冰界和二氧化碳浓度之间非线性耦合的相互作用及其整个大气系统的复杂演化过程,得到了在给定控制参数下胞映射吸引子和各步吸引域在胞映射相空间中的分布图形,刻划了系统长期演化的全局性态。另外,通过调试A参数还发现它对系统准稳态演化过程的影响敏感,参数A值过于简化可能导致系统信息丢失。更多还原

【Abstract】 A new alter simple cell mapping method is proposed and used for computing Saltzman climatic model, i.e., Energy balance climate model with forcing property. The nonlinear coupling interactions among sea temperature, ice-edge and concentration of CO2 are revealed dynamically, obviously and effectively in this paper, and the complete evolution process of climatic system has been simulated successfully. Distribution graphics of attractors and domains of attractors in the cell mapping state space are given, which show the property of global system after long-term evolution. By numerical experiment to key parameter A a conclusion is obtained that A has an important effect on prospective stable state, and oversimplifying to the key parameter will result in the loss of nonlinear information during evolution process.更多还原