CLASSIC: a semi-distributed rainfall-runoff modelling system
CLASSIC: a semi-distributed rainfall-runoff modelling system
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CLASSIC：半分布式降雨径流建模系统
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
P. Naden
中科院分区：
文献类型：
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作者：
S. M. Crooks;P. Naden
抽象的。本文描述了半分布式概念性降雨-径流模型的发展，该模型最初是为了模拟气候和土地利用变化对洪水频率的影响而建立的。该模型具有土壤水分平衡、排水响应和渠道布线的组件模块，并基于网格，允许将地理信息系统和数字地形模型(DTM)派生的数据集直接合并到参数值的初始化中。汇流径流来自每个栅格正方形内的排水模块的流量分量的聚合，以及来自所有栅格正方形的总导流流量。对于每个阶段，使用不同的目标函数对三个模块依次执行校准。模型系统的一个关键原则是嵌套校准的概念，它确保为大流域内的点模拟的所有水流在空间上是一致的。该模拟系统是稳健的，并已在不同的空间尺度上成功地应用于英国的三个大流域，包括比较观测到的和模拟的洪水频率和径流持续时间曲线，模拟未经校准的集水区的水流，以及识别模拟的过程线内的水流成分。概述了这种模型在综合流域研究中的作用。
Abstract. This paper describes the development of a semi-distributed conceptual rainfall–runoff model, originally formulated to simulate impacts of climate and land-use change on flood frequency. The model has component modules for soil moisture balance, drainage response and channel routing and is grid-based to allow direct incorporation of GIS- and Digital Terrain Model (DTM)-derived data sets into the initialisation of parameter values. Catchment runoff is derived from the aggregation of components of flow from the drainage module within each grid square and from total routed flow from all grid squares. Calibration is performed sequentially for the three modules using different objective functions for each stage. A key principle of the modelling system is the concept of nested calibration, which ensures that all flows simulated for points within a large catchment are spatially consistent. The modelling system is robust and has been applied successfully at different spatial scales to three large catchments in the UK, including comparison of observed and modelled flood frequency and flow duration curves, simulation of flows for uncalibrated catchments and identification of components of flow within a modelled hydrograph. The role of such a model in integrated catchment studies is outlined.