摘要
本文介绍了区域蒸散发互补关系概念,建立了适用于我国条件的计算区域性陆面蒸散发量的数学模型和计算机模型。建立的模型以常规地面气候观测资料作为基本输入,资料容易得到,计算方便。将模型应用于陕西省51个流域或区间,成果合理,精度较高。同水量平衡法计算值比较,51个流域十年平均值的平均相对误善为4.1％,相对误差的标准差只有3.0％。模型不需要专门的区域性参数,有较广的适应性。
The complementary relationship areal evapotranspiration is presented. A model which is suitable to estimate areal evapotranspiralion in China based on the complementary relationship, using rouline surface wheather observations (relative humidity, mean air temperature and sunshine hours), is formulated and programmed. The model is applied to 51 watersheds or regions in Shaanxi Province. Compared with water budget estimates, the model estimates have sufficient accuracy. For a tenyear period ended 1980, the averaged relative error between the model estimates and the water budget estimates is 4.1% and the standard error of the relative errors for the 51 watersheds or regions is 3.0%. The model does not need local parameters and can be applied elsewhere.
出处
《西北水资源与水工程》
1991年第3期11-23,共13页
Northwest Water Resources & Water Engineering
