与MM5气象模式耦合的VIC分布式水文模型构建  

Constructing VIC Distributed Hydrological Model coupled with MM5 meteorological Model in Hanzhong area

作　　者：张俊[1] 郭生练[1] 陈华[1] 林凯荣[1] 李超群[1] 陈桂亚 李春龙 訾丽 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]长江水利委员会水文局,湖北武汉430010

出　　处：《人民长江》2008年第8期92-95,共4页Yangtze River

基　　金：国家自然科学基金资助项目(50679063);国际科技合作重点资助项目(2005DFA20520)

摘　　要：从水文气象耦合的角度入手,根据汉中流域的特点,首次在汉江流域MM5运行的9 km×9 km网格上构建了VIC日分布式水文模型。利用流域内7个水文站的径流资料对该模型进行了应用检验。结果表明,该模型能较好模拟汉中流域的日径流过程,其模拟精度与集总式VIC模型和集总式三水源新安江模型基本相当,但它充分考虑了研究流域内降水输入和下垫面条件的空间差异性,能够提供网格降水分布及流域内产汇流的分布状况,能进一步同中尺度MM5气象模式耦合,延长洪水预报的预见期。A daily VIC distributed hydrological model,coupled with MM5 model,was proposed and established based on 9km×9km grids system in Hanzhong area.The VIC model was applied and verified in seven hydrological stations located in Hanzhong area.It is shown that the model can well simulates the daily runoff process in Hanzhong area and the model efficiency is similar to those of the lumped VIC and Xinanjiang Hydrological Model.Moreover,the proposed model considers the spatial variability of precipitation and underlying surface situation,it can provide the precipitation distribution in girds and spatial distribution of runoff in the area,and coupled with MM5,prolongs forecast term of flood.

关 键 词：分布式VIC模型 MM5气象模式 洪水预报 汉中流域 

分 类 号：P334.92[天文地球—水文科学]