简介:TheEINio-southernoscillation(ENSO)isaninterannualphenomenoninvolvedintropicalPacificoceanatmosphereinteractions.Inthispaper,wedevelopanasymptoticmethodofsolvingthenonlinearequationusingtheENSOmodel.BasedonaclassoftheoscillatoroftheENSOmodel,aapproximatesolutionofthecorrespondingproblemisstudiedemployingtheperturbationmethod.