Detecting the effects of spatial variability of rainfall on hydrological modelling within an uncertainty analysis framework
Detecting the effects of spatial variability of rainfall on hydrological modelling within an uncertainty analysis framework
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DOI：
10.1002/hyp.7341
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发表时间：
2009-07
影响因子：
3.2
通讯作者：
P. Younger;J. Freer;Keith Beven
中科院分区：
文献类型：
--
作者：
P. Younger;J. Freer;Keith Beven
众所周知，降雨的空间模式会导致观测到的流量出现差异。本文利用英格兰西南部布鲁流域（135 平方公里）的水文模型 Dynamic TOPMODEL 探讨了降雨模式的扰动对参数集变化以及模型输出的影响。每个时间步长的总降雨量保持不变，因此扰动充当空间模式中有效处理的误差。对错误进行了分析，特别强调何时可以在不确定性框架下检测到错误。
Spatial patterns of rainfall are known to cause differences in observed flow. In this paper, the effects of perturbations in rainfall patterns on changes in parameter sets as well as model output are explored using the hydrological model Dynamic TOPMODEL for the Brue catchment (135 km2) in southwest England. Overall rainfall amount remains the same at each time step so the perturbations act as effectively treated errors in the spatial pattern. The errors were analysed with particular emphasis on when they could be detected under an uncertainty framework.