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| Titel |
Multimodel evaluation of twenty lumped hydrological models under contrasted climate conditions |
| VerfasserIn |
G. Seiller, F. Anctil, C. Perrin |
| 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 ; 16, no. 4 ; Nr. 16, no. 4 (2012-04-11), S.1171-1189 |
| Datensatznummer |
250013256
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| Publikation (Nr.) |
 copernicus.org/hess-16-1171-2012.pdf |
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| Zusammenfassung |
| This paper investigates the temporal transposability of hydrological models
under contrasted climate conditions and evaluates the added value of using
an ensemble of model structures for flow simulation. This is achieved by
applying the Differential Split Sample Test procedure to twenty lumped
conceptual models on a catchment in the Province of Québec (Canada) and
another one in the State of Bavaria (Germany). First, a
calibration/validation procedure was applied on four historical
non-continuous periods with contrasted climate conditions. Then, model
efficiency was quantified individually (for each model) and collectively
(for the model ensemble). The individual analysis evaluated model
performance and robustness. The ensemble investigation, based on the average
of simulated discharges, focused on the twenty-member ensemble and all
possible model subsets. Results showed that using a single model may provide
hazardous results when the model is to be applied in contrasted conditions.
Overall, some models turned out as a good compromise in terms of performance
and robustness, but generally not as much as the twenty-model ensemble.
Model subsets offered yet improved performance over the twenty-model
ensemble, but at the expanse of spatial transposability (i.e. need of
site-specific analysis). |
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