基于RegCM3和DLBRM的耦合系统CRCHMS的构建及其在黑河上游的应用

以高寒山区—黑河流域上游为研究区，确定区域气候模式RegCM3的模拟方案，率定分布式水文模型（DLBRM），并开发了RegCM3和DLBRM模型接口，从而构建了区域气候水文耦合模拟系统CRCHMS。结果表明，以RegCM3作为气象驱动数据的CRCHMS系统模拟性能优于以观测站点作为气象驱动数据的DLBRM模型，对莺落峡径流量的模拟值与实测值的相关系数在校准期和验证期分别为0.47和0.62，均方根误差分别为0.045和0.044 cm/d，相对误差分别为-0.4%和6%，纳什系数在率定期和验证期分别为0.22和0.36。

The construction of a coupling system CRCHMS based on RegCM3 and DLBRM and application in the upper reaches of the Heihe River

A coupled system CRCHMS (Coupled Regional Climate and Hydrological Modeling System) was established based on a regional climate model (RegCM3) and a hydrological model (DLBRM), and applied in the upper reach of the Heihe River watershed. The simulation schemes of the RegCM3 model are determined, the DLBRM (Distributed Large Basin Runoff Model) model was calibrated, and the interfaces are developed to process the RegCM3 output as the input of the DLBRM models. The results show that performance of CRCHMS system driven by RegCM3 is more reliable than DLBRM model using meteorological observation data for driving model, The R values between simulated and observed runoff at Yingluoxia were 0.47 and 0.62, and with 0.045 cm/d and 0.044 cm/d of RMSE values, -0.4% and 6% of RE values, 0.22 and 0.36 of NSE values in rate period and validation period, respectively. In addition, bias correction of RegCM3 output can improve the performance of the CRCHMS model, which will be further improved in the future, in order to accurately simulate and analyze the impact of climate change on the hydrological processes of mountain basins.