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在陆面过程方案中考虑精细的水文模型有助于改善对区域水文及气候的模拟。建立了一个考虑降水及入渗空间非均匀性的水文模型,并将其并入陆面过程方案BATS中。通过区域气候模式耦合模拟试验,得到如下主要结论:陆面水文的模拟对降水及入渗空间非均匀性的考虑非常敏感:考虑入渗非均匀性后,提高了径流系数,这与湿润地区水分平衡的观测结果更一致;入渗非均匀参数化方案的引入对区域水文及气候模拟的影响比降水非均匀参数化方案的引入要大:不透水面积在区域中的考虑所揭示的特征与我国北方干旱化趋势是一致的。
Consideration of meticulous hydrological models in land-based process scenarios can help improve the simulation of hydrological and climatic conditions in the region. A hydrological model that takes into account the heterogeneity of precipitation and infiltration is established and incorporated into the land-based process BATS. Through the regional climate model coupling simulation test, the following main conclusions are obtained: The simulation of land surface hydrology is very sensitive to the nonuniformity of precipitation and infiltration space. After taking into account the heterogeneity of infiltration, the runoff coefficient is increased, which is similar to that of wetting area The results of the balanced observations are more consistent. The introduction of non-uniform infiltration parameterization scheme has more impact on regional hydrology and climate simulation than the non-uniform precipitation parameterization scheme. The features revealed by the consideration of the impervious area are similar to those of our country Aridification in the north is consistent.