| 大尺度水文模型TOPX构建及其与区域环境系统集成模式RIEMS的耦合 |
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| 引用本文： | 雍斌,任立良,陈喜,张运,张万昌,符淙斌,牛国跃.大尺度水文模型TOPX构建及其与区域环境系统集成模式RIEMS的耦合[J].地球物理学报,2009,52(8):1954-1965. |
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| 作者姓名： | 雍斌 任立良 陈喜 张运 张万昌 符淙斌 牛国跃 |
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| 作者单位： | 1.河海大学水文水资源与水利工程科学国家重点实验室，南京 210098;2.南京大学地理信息科学系，南京 210093;3.中国科学院大气物理所东亚区域气候-环境重点实验室，北京 100029;4.美国德克萨斯大学奥斯汀分校地质系，奥斯汀 TX 78712-0254 |
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| 基金项目： | 国家重点基础研究发展规划项目，高等学校学科创新111引智计划项目，教育部科学技术研究重大项目 |
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| 摘 要： | 基于改进型SIMTOP参数化径流方案和新安江模型的三层土壤水量平衡计算方法，本文构建了一个输入数据和率定参数较少、同时具有地形指数尺度转换机制、较好描述二维水文过程的简单高效的大尺度水文模型TOPX，并将其与区域环境系统集成模式RIEMS紧密耦合，以增强区域气候模式对大尺度流域径流量的定量数值模拟能力．TOPX模型在酉水河流域和泾河流域的离线测试表明：该模型对小尺度流域的径流量模拟精度较高，能够较好地描述流域水文变化过程；同时，该模型在大尺度上具有较强的分布式模拟能力，能够捕捉陆面水文过程的主要特征和时空演变特点．TOPX与RIEMS的耦合模式在泾河流域进行了在线测试，借助TOPX模型中的地形指数降尺度转换和水文过程产汇流机制，耦合模式实现了利用区域气候模式模拟的气象资料来驱动水文模型进行大尺度流域日径流量的模拟．进一步分析还表明：区域气候模式RIEMS模拟的降水时空分布数据的精度是影响耦合模式对径流量模拟效果的关键因素．
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| 关 键 词： | 大尺度水文模型 TOPX 区域气候模式 RIEMS TOPMODEL 新安江模型 |
| 收稿时间： | 2008-9-1 |
| 修稿时间： | 2008-11-4 |
Development of a large-scale hydrological model TOPX and its coupling with regional integrated environment modeling system RIEMS |
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| YONG Bin,REN Li-Liang,CHEN Xi,ZHANG Yun,ZHANG Wan-Chang,FU Cong-Bin,NIU Guo-Yu.Development of a large-scale hydrological model TOPX and its coupling with regional integrated environment modeling system RIEMS[J].Chinese Journal of Geophysics,2009,52(8):1954-1965. |
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| Authors: | YONG Bin REN Li-Liang CHEN Xi ZHANG Yun ZHANG Wan-Chang FU Cong-Bin NIU Guo-Yu |
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| Abstract: | On the basis of the improved SIMTOP runoff parameterization scheme and the calculating method of three-layer soil moisture balance in Xinanjiang model, this paper developed a simple but highly-efficient large-scale hydrological model (TOPX), which can provide the function of scaling transformation on topographic index. Although the TOPX model has less data input and minimum parameters for calibrating, it can better describe the two-dimensional hydrological processes. Then TOPX was coupled with the Regional Integrated Environment Modeling System (RIEMS) to enforce its ability of numerical simulation for the runoff in large-scale watershed. The results of the offline test performed at Youshui River catchment indicate that the TOPX model produced better simulation effect of daily runoff in small sized catchments and it can describe the various hydrological processes of watershed. The offline test of Jinghe basin shows that TOPX model has the better ability of distributed simulation at large-scale and it can capture the major characteristics of land-surface hydrological processes at regional-scale. Then the coupling model of RIEMS and TOPX was still online tested in Jinghe basin. By means of the scale transformation scheme on topographic index and the yielding and runoff routing theory, the coupling model uses the meteorological data simulated by a regional climate model to drive the hydrological model for predicting the daily runoff at large-scale watershed. A further analysis revealed that the accuracy of the distributed rainfall data simulated by the regional climate model (RIEMS) is the crucial factor to affect the modeled runoff in the coupling model (RIEMS_TOPX). |
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| Keywords: | Large-scale hydrological model TOPX Regional climate model RIEMS TOPMODEL Xinanjiang model |
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