Asymptotic solution for a class of sea-air oscillator model for El Nino-southern oscillation

作者：Mo Jia Qi^*; Lin Wan Tao

来源：Chinese Physics B, 2008, 17(2): 370-372.

• nonlinear
• perturbation method
• El nino-southern oscillation model

The El Nino-Southern Oscillation (ENSO) is an interannual phenomenon involved in the tropical Pacific Ocean-atmosphere interactions. In this paper, an asymptotic method of solving the nonlinear equation for the ENSO model is used. And based on a class of oscillator of ENSO model, the approximate solution of a corresponding problem is studied by employing the perturbation method. Firstly, an ENSO model of nonlinear time delay equation of equatorial Pacific is introduced, Secondly, by using the perturbed method, the zeroth and first order asymptotic perturbed solutions are constructed. Finally, from the comparison of the values for a figure, it is seen that the first asymptotic perturbed solution using the perturbation method has a good accuracy. And it is proved from the results that the perturbation method can be used as an analytic operation for the sea surface temperature anomaly in the equatorial Pacific of the atmosphere-ocean oscillation for the ENSO model.

• 出版日期2008-2
• 单位安徽师范大学; 中国科学院大气物理研究所; 湖州师范学院; 上海交通大学; 上海大学