四川省平均气温序列的均一性检验及其分析

Detecting and Analysis on Average Temperature Data Homogeneity of Sichuan

本文应用标准正态检验（SNHT）技术，对四川省161个台站自建站以来～2005年的长序列气温资料进行了一个普查性的检验，发现四川161个台站中有64．6％的台站存在气温资料的不均一现象，盆地内站点的不均一现象略高于高原三州台站，60年代以前和2000年以后不均一的台站比其他年代少；并且结合四川省台站历史沿革资料分析发现，有21．2％的台站的不均一问题是由迁站引起的。进一步以松潘和中江站为例，初步分析了不均一性产生的原因。

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 inho- mogeneities problems. Further more , the analysis show what cause the inhomogeneities by reserchering the Songpan station and the Zhongjiang station.