加拿大CRAE蒸散发模型开发应用

Application of the CRAE Model of CAN

用我国北方一个试验站实测土壤蒸散发量资料和７个流域的实测水文资料对加拿大ＣＲＡＥ蒸散发模型的计算精度进行了检验．计算成果表明，模型中关于流域蒸散发互补相关的物理成因基础在我国北方是客观存在的，模型中的各项计算公式也较合适．但如果全搬模型中参数进行分析计算，则效果不好，必须结合计算流域的地理特点，对某些重要参数优选，才能获得良好的效果．

sing the soil evaporation data from an observati on station and hydrological data from 7 basins in the northern part of Chind,The CRAE Model is applied. The results indicate that the physical mechanism of areal evapotranspi ration complementary relationship exists in the northern part of China. The formulae of the model are suitable. According to the geographical fcatures of the different basins,the parameters of the model should be adjusted,otherwise good results will not be produced.On the basis of specific conditions,the approach for parameter optimization and the experience for ascertaining the range of eteorological data validity are given in this paper.