区域性夏季平均气温空间插值方法比较

Comparison of Spatial Interpolation Methods of Summer Average Temperature in Three Northeastern Provinces

使用ArcGIS软件,采用反距离权重法、普通克里格法和泛克里格法3种空间插值方法,以东北三省78个气象站点1999、2004年夏季平均气温数据为例进行了空间插值,并采用交叉检验的方法对插值结果进行了比较。结果表明,3种方法所得插值结果均能大致反映气温分布状况,但从精度分析上看,泛克里格法精度优于反距离权重法和普通克里格法。

Using the ArcGIS software,three kinds of spatial interpolation methods,such as the inverse distance weight method（IDW）,the ordinary Kriging and the universal Kriging method,were used to interpolate the summer average temperature data of 78 meteorological stations in 1999 and 2004 in Northeast China.The cross test method compared the interpolation results.The results showed that the interpolated results of the three methods could reflect the temperature distribution,but from the point of view of accuracy analysis,the accuracy of the universal Kriging method was superior to IDW and the ordinary Kriging method.