【摘要】 基于松花江流域46个国家基准站的年降水资料和分辨率为1 km的数字高程模型(DEM)数据,考虑了距离和高程权重,利用PR ISM(Parameter-elevation Regression on Independent SlopesModel)内插方法计算了松花江流域2000—2004年各年降水量,通过Arcinfo输出了含有地理信息的降水量分布,细致地反映了松花江流域降水量的空间分布状况,并对所用气象站点数据作了交叉验证,误差在可接受范围内。更多还原

【Abstract】 Based on the DEM data of 1 km×1 km and the precipitation data of 46 base stations in the Songhuajiang River basin,the interpolation of the annual rainfall of 2000—2004 is performed in the paper using the parameter-elevation regression on independent slopes model(PRISM) methed,which mainly takes into account the weight of the distance between raster points and base stations and of the elevation changes from raster points to base stations.The spatial distribution of the annual precitation containing geographical information is output by Arcinfo at a high resolution,and cross-validation errors of the stations are small.更多还原