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| Titel |
The influence of conceptual model structure on model performance: a comparative study for 237 French catchments |
| VerfasserIn |
W. R. Esse, C. Perrin, M. J. Booij, D. C. M. Augustijn, F. Fenicia, D. Kavetski, F. Lobligeois |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 17, no. 10 ; Nr. 17, no. 10 (2013-10-29), S.4227-4239 |
| Datensatznummer |
250085975
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| Publikation (Nr.) |
 copernicus.org/hess-17-4227-2013.pdf |
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| Zusammenfassung |
| Models with a fixed structure are widely used in
hydrological studies and operational applications. For various reasons,
these models do not always perform well. As an alternative, flexible
modelling approaches allow the identification and refinement of the model
structure as part of the modelling process. In this study, twelve different
conceptual model structures from the SUPERFLEX framework are compared with
the fixed model structure GR4H, using a large set of 237 French catchments
and discharge-based performance metrics. The results show that, in general,
the flexible approach performs better than the fixed approach. However, the
flexible approach has a higher chance of inconsistent results when
calibrated on two different periods. When analysing the subset of 116
catchments where the two approaches produce consistent performance over
multiple time periods, their average performance relative to each other is
almost equivalent. From the point of view of developing a well-performing
fixed model structure, the findings favour models with parallel reservoirs
and a power function to describe the reservoir outflow. In general,
conceptual hydrological models perform better on larger and/or wetter
catchments than on smaller and/or drier catchments. The model structures
performed poorly when there were large climatic differences between the
calibration and validation periods, in catchments with flashy flows, and in
catchments with unexplained variations in low flow measurements. |
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