Precipitation Prediction Model in the Duolun Area, Inner Mongolia *

st , 2012; revised: Jun. 16 th , 2012; accepted: Jun. 25 th , 2012 Abstract: We use the ARMA model to analyze rainfall data of Duolun, and use the established ARMA model to verify the applicability of the model and to predict the next 2 to 3 years rainfall in the Duolun region for the production and life.