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利用测雨雷达结合稠密和稀疏雨量站网估计流域降水分布,将小同方法获得的降水分布输入降水径流模型TOPMODEL,模拟1998,1999夏季GAME/HUBEX试验区梅山和鲇鱼山集水区的径流,并与实测径流进行比较和分析,结果表明:1)雷达结合集水区内雨量计网模拟径流的精度优于传统的用稠密雨量计网模拟径流的精度;2)利用雷达结合集水区外相对稀疏的雨量计网模拟径流的精度和用集水区内稠密雨量计网模拟径流的精度相当,显示了测雨雷达在径流模拟和洪水预报中极大的应用潜力。
Using rainfall-radar combined with dense and sparse rainfall stations to estimate the distribution of precipitation, the precipitation distribution obtained by the method was input into TOPMODEL model to simulate the runoff of Meishan and Bonyu Mountains catchment in the GAME / HUBEX test area in summer of 1998 and 1999 , And compared with the measured runoff. The results show that: 1) The accuracy of the simulated runoff of the rain gauge net in the radar combined with catchment area is better than that of the traditional runoff simulation with the dense gauge net; 2) The accuracies of simulating runoff with relatively sparse gauges are similar to those of simulating runoff with dense gauges in the catchment area. This shows the great potential of rain gauges in runoff simulation and flood forecasting.