利用RIEMS-LRM对黄河河川径流的模拟研究

摘要

利用区域系统环境集成模式(RIEMS)和一个offline的大尺度汇流模型(LRM)对黄河的河川径流做了模拟.中国科学院大气物理所东亚中心从1991年开始建立和发展RIEMS,并验证RIEMS对东亚区域气候有较好的模拟能力.LRM是以线性时基不变假定为基础并能够计算水的水平传输的数学模型.RIEMS-LRM可以用来模拟和预测大尺度河流的河川径流.RIEMS-LRM在黄河上游河段的应用证实其有能力对大尺度河流的河川径流进行模拟.此外,作者还分析了模拟误差产生的原因.%The streamflow over the Yellow River basin is simulated by using the high-resolution RegionalIntegrated Environmental Model System (RIEMS), and an off-line Large-scale Routing Model (LRM).The RIEMS was designed and has been developed by the Global Change System for Analysis, Researchand Training Regional Center for Temperate East Asia (START/TEA) since 1991 and has a good capabilityto simulate the regional climate of East Asia. The LRM is based on the assumption of linearity and timeinvariance and can calculate the horizontal travel of water. The RIEMS-LRM allows the direct comparisonof predicted and observed streamflow data for large-scale rivers. The application of the RIEMS-LRM tothe upper reaches of the Yellow River verifies that the coupled model system has the capability to simulatethe streamflow over a large-scale river. Furthermore, the paper discusses the reasons leading to simulationerrors.