Print Email Facebook Twitter The influence of conceptual model structure on model performance: A comparative study for 237 French catchments Title The influence of conceptual model structure on model performance: A comparative study for 237 French catchments Author Van Esse, W.R. Perrin, C. Booij, M.J. Augustijn, D.C.M. Fenicia, F. Lobligeois, F. Faculty Civil Engineering and Geosciences Department Water Management Date 2013-04-29 Abstract In hydrological studies models with a fixed structure are commonly used. For various reasons, these models do not always perform well. As an alternative, a flexible modelling approach could be followed, where the identification of the model structure is part of the model set-up procedure. In this study, the performance of twelve different conceptual model structures from the SUPERFLEX framework with varying complexity and the fixed model structure of GR4H were compared on a large set of 237 French catchments. The results showed that in general the flexible approach performs better than the fixed approach. However, the flexible approach has a higher chance of inconsistent results when implemented on two different periods. The same holds for more complex model structures. When for practical reasons a fixed model structure is preferred, this study shows that models with parallel reservoirs and a power function to describe the reservoir outflow perform best. In general, conceptual hydrological models perform better on large or wet catchments than on small or dry catchments. The model structures performed poorly when there was a climatic difference between the calibration and validation period, for catchments with flashy flows or disturbances in low flow measurements. To reference this document use: http://resolver.tudelft.nl/uuid:79d530e9-ac31-4acb-9533-01ef538ea565 DOI https://doi.org/10.5194/hessd-10-5457-2013 Publisher European Geosciences Union ISSN 1812-2108 Source Hydrology and Earth System Sciences Discussions, 10 (4), 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 The Author(s)CC Attribution 3.0 License Files PDF Fenicia_2013.pdf 1.06 MB Close viewer /islandora/object/uuid:79d530e9-ac31-4acb-9533-01ef538ea565/datastream/OBJ/view