Detecting and Analysis on Average Temperature Data Homogeneity of Sichuan

The annual and average temperature data over 161 stations in Sichuan are chosen in the homogeneity studies by the traditional standard normal homogeneity (SNHT) method.The testing results show that 64.6% percent stations have inhomogeneities.The inhomogeneities datas in the basin are a little more than the plateau stations.the inhomogeities data before the 1960 and 2000 later are less than the other year's stations.It is found that the changing stations cause about 21.2 percent inhomogeneities problems.Further more, the analysis show what cause the inhomogeneities by reserchering the Songpan station and the Zhongjiang station.