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Periodic solutions of El Niño model through the Vallis differential system. (English) Zbl 1302.86010

Summary: By rescaling the variables, the parameters and the periodic function of the Vallis differential system we provide sufficient conditions for the existence of periodic solutions and we also characterize their kind of stability. The results are obtained using averaging theory.

MSC:

86A10 Meteorology and atmospheric physics
37N10 Dynamical systems in fluid mechanics, oceanography and meteorology
34C25 Periodic solutions to ordinary differential equations
34C07 Theory of limit cycles of polynomial and analytic vector fields (existence, uniqueness, bounds, Hilbert’s 16th problem and ramifications) for ordinary differential equations

References:

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