Time Series Analysis of Rainfall Distribution in Gambella Meteorological Station

This study conducted on this research on the Time Series Analysis of rainfall distribution in Gambella meteorological station. On this study, we try to see what the rainfall behavior of Gambella meteorological station seems like. In our study we have used time series model and focused on time series component, to deal variation and trend of rain fall distribution in Gambella metrological station, First, we have seen the actual data of rainfall in mm of the last ten years. The data shows a little change the year. When we see the trend value of the last ten years of the rain it is proportionally a little increasing. From the seasonal indices we have seen there was higher rainfall in the beginning of the years that means the earliest time and it shows proportionally decreasing except 2009 was higher rainfall. Lastly we seen the forecasted value for 2013 based on the rainfall of 2012 rainfall and the forecasted value of rainfall in Gambella meteorological is similar to that of its preceding years, but it will show a little decreasing at the beginning of the year and it will be constant.