An evaluation of three lumped conceptual rainfall-runoff models at catchment scale
An evaluation of three lumped conceptual rainfall-runoff models at catchment scale
复制标题
流域尺度的三种集总概念降雨径流模型的评估
DOI：
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发表时间：
2010
期刊：
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通讯作者：
P. Willem
中科院分区：
文献类型：
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作者：
N. T. Anh;J. Boxall;A. Saul;P. Willem
集总概念性降雨径流模型在水文学中已广泛应用多年。这些模型通常能够通过一组可解方程来描述流域中最重要的过程。因此，在许多情况下，它们优于完全基于物理的模型，因为它们具有这样的优点：基本的物理基础和简单性。然而，这些模型的许多参数并不总是能够直接测量，由于事实上，这些概念模型是集中在流域尺度上。尽管模型结构可以非常详细，但如果模型参数指定得不好，则建模结果可能没有意义。水文模型的有用性取决于模型的校准程度。本文介绍并比较了NAM（DHI）、FEH（UK）和TVM（作者提出的简化模型）三种集总概念性径流模型。如果NAM和TVM模型是连续建模的代表，那么FEH模型是基于事件的类型。这三种不同的模型被应用到布拉德福德流域（英国）的季节性基础上（夏季和冬季）的时间步长为每小时或每季度。给出了模型校正的步骤。模型验证与统计分析一起进行。研究表明，本文所述的水文模型总体上在精度方面给出了合理的结果。然而，为特定集水区选择模型应基于数据的可用性、项目目标和模型结构。
Lumped conceptual rainfall runoff models have been widely used in hydrology for many years. These models are usually able to describe most important processes in a catchment through a set of solvable equations. Thus, in many cases they are preferably over full physically-based models since they have such advantages: basic physicallybased and simplicity. However, many parameters of these models can not always be directly measured due to the fact that the conceptual models are lumped on catchment scales. Even though the model structure can be very detailed, the modelled results are possibly meaningless if the model parameters are poorly specified. The usefulness of the hydrological model relies on how well the model is calibrated. Three lumped conceptual rainfall-runoff models were presented and compared in this paper: NAM (DHI), FEH (UK), and TVM (a simplified model was developed by the author). If the NAM and TVM models are representative for continuous modelling, then the FEH model is event-based type. These three different models were applied to the Bradford catchment (UK) on a seasonal basis (summer and winter) with a time step of hourly or quarter hourly. The procedure of model calibration was presented. Model validation was performed together with statistical analysis. It has been shown in the study that overall the hydrological models represented in the paper give reasonable results in terms of accuracy. However, the selection of models for particular catchments should be based on data availability, project objective and model structure.