大气臭氧层动力学系统中化学与动力扩散耦合过程的研究  

A Study on Coupling Process of Chemicals and Dynamic Dispersion in the Ozonosphere System

作　　者：王卫国[1] 吴涧[1] 蒋维楣[2] 谢应齐[1] 陈鲁言[3] 

机构地区：[1]云南大学大气科学系,昆明650091 [2]南京大学科学系,南京210093 [3]香港理工大学土木工程学系

出　　处：《南京大学学报（自然科学版）》2003年第3期345-357,共13页Journal of Nanjing University（Natural Science）

基　　金：国家自然科学基金项目(40165001)和(40205016);云南省教育厅科研基金项目(0111163)

摘　　要：对平流层复杂过程控制的臭氧层系统,从支配耦合的动力学方程中解出臭氧宏观数密度行为定态解析解,并判别其稳定性.结果表明臭氧层动力学系统出现m=±Jo3/H的耦合时存在临界结构不稳定.通过对控制参数功能结构和时空结构的关系分析,发现了一些非常[O2]=6.75rk3,且对应重要的动态平衡耦合形式.主要包含有:(1)光化与催化的互耦平衡JO2的转折为Jo3/2;(2)化学排斥子和动力排斥子的分界分歧点(Jo3/2,±Jo3);(3)动力扩散与光化学作用控制的动态平衡射线m=±Jo3等.它们不同的组合结构提供了支配臭氧层系统演化过程的重要控制信息,从而揭示了臭氧层宏观行为的动力学特征.与此同时,还结合南极地区上空特征的大气环境条件,讨论了那里冬春季臭氧层演变的可能解释.The equation of order parameter which has been controlled by the complicated process was conducted about the nonlinear ozone layer system and was solved to get the steadystate analystical solution. The stability of macroscopic density conduct system was determined too.The results show that some vital coupling forms of dynamic equilibrium, mainly including cross coupling equilibrium of photochemistry and catalysis(JO2［O2］=6.75rk3)and its inflexion point(Jo3/2),demarcation bifurcation point of chemical and dynamic repeller(Jo3/2,±Jo3),ray(m=±Jo3) of dynamic proliferation and photochemical equilibrium etc., have been discovered by the structure of controlled parameters.The different combination structures of spacetime formed the nonlinear dynamic feature of the ozone layer evolution. At the end of this paper potential interpretation of the ozone layer evolution in winter and spring has been discussed according to the special environmental conditions in Antarctic.

关 键 词：大气结构 臭氧层 动力学系统 动力扩散 光化学作用 耦合过程 特征时间 

分 类 号：P421.33[天文地球—大气科学及气象学]