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通过数学变换将一类厄尔尼诺-南方涛动(简称ENSO)的充电-放电振子模型转换成van der Pol方程,由van derPol方程的定性分析严格证明了该ENSO振荡子模型存在一个稳定的极限环.
A class of charge-discharge oscillator model of El Niño-Southern Oscillation (ENSO) is transformed into the van der Pol equation through mathematical transformation. The qualitative analysis of the van der Pol equation shows that there is a stable limit cycle for the ENSO oscillation sub-model.