Singularly Perturbed Solution of Coupled Model in Atmosphere-ocean for Global Climate  

作　　者：MO Jiaqi LIN Wantao WANG Hui 

机构地区：[1]Department of Mathematics, Anhui Normal University, Wuhu 241000, China [2]Division of Computational Science E-Institutes of Shanghai Universities at SJTU, Shanghai 200240, China [3]Huzhou Teachers College, Huzhou 313000, China [4]LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China [5]Chinese Academy ofMeteorological Sciences, Beijing 100081, China

出　　处：《Chinese Geographical Science》2008年第2期193-196,共4页中国地理科学（英文版）

基　　金：Under the auspices of National Natural Science Foundation of China (No. 40676016, No. 10471039);National Key Project for Basics Research (No. 2003CB415101-03, No. 2004CB418304);Key Project of Chinese Academy of Sciences (No. KZCX3-SW-221);E-Insitutes of Shanghai Municipal Education Commission (No. E03004)

摘　　要：A box model of the interhemispheric thermohaline circulation (THC) in atmosphere-ocean for global cli-mate is considered. By using the multi-scales method, the asymptotic solution of a simplified weakly nonlinear model is discussed. Firstly, by introducing first scale, the zeroth order approximate solution of the model is obtained. Sec-ondly, by using the multi-scales, the first order approximate equation of the model is found. Finally, second order ap-proximate equation is formed to eliminate the secular terms, and a uniformly valid asymptotic expansion of solution is decided. The multi-scales solving method is an analytic method which can be used to analyze operation sequentially. And then we can also study the diversified qualitative and quantitative behaviors for corresponding physical quantities. This paper aims at providing a valid method for solving a box model of the nonlinear equation.A box model of the interhemispheric thermohaline circulation （THC） in atmosphere-ocean for global climate is considered. By using the multi-scales method, the asymptotic solution of a simplified weakly nonlinear model is discussed. Firstly, by introducing first scale, the zeroth order approximate solution of the model is obtained. Secondly, by using the multi-scales, the first order approximate equation of the model is found. Finally, second order approximate equation is formed to eliminate the secular terms, and a uniformly valid asymptotic expansion of solution is decided. The multi-scales solving method is an analytic method which can be used to analyze operation sequentially. And then we can also study the diversified qualitative and quantitative behaviors for corresponding physical quantities. This paper aims at providing a valid method for solving a box model of the nonlinear equation.

关 键 词：atmosphere-ocean El Nino-Southern Oscillation singular perturbation approximate solution 

分 类 号：P46[天文地球—大气科学及气象学]