The Study of Temperature and Precipitation Trends in West and Northwestern Iran

The purpose of this study examines changes in temperature and precipitation trends in the annual scale and placed in northwestern Iran. How to use this process, the presence or absence of climate change to be determined. Therefore two methods of parametric regression analysis and Pearson correlation coefficients and nonparametric methods I used Kendall and Spearman coefficients. Using Arc GIS software to examine changes had occurred in the paid, and Minitab software using time series method changes the process by 2020 we predict.