| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7155619 | Communications in Nonlinear Science and Numerical Simulation | 2015 | 6 Pages |
Abstract
The annual-cycle impact on a class of nonlinear ENSO recharge oscillator model is studied by transforming the model equations into the van der Pol-Duffing oscillator with external forcing. The Hopf bifurcation and stable limit cycle are obtained by the multi-scale method. Qualitative analysis and numerical results show that the ENSO system turns into quasi-periodic oscillations as the annual-cycle forcing is increased.
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Authors
Wu-Fan Zhang, Qiang Zhao,