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| Titel |
An approach to identify time consistent model parameters: sub-period calibration |
| VerfasserIn |
S. Gharari, M. Hrachowitz, F. Fenicia, H. H. G. Savenije |
| 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. 1 ; Nr. 17, no. 1 (2013-01-17), S.149-161 |
| Datensatznummer |
250017681
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| Publikation (Nr.) |
 copernicus.org/hess-17-149-2013.pdf |
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| Zusammenfassung |
| Conceptual hydrological models rely on calibration for the identification of
their parameters. As these models are typically designed to reflect real
catchment processes, a key objective of an appropriate calibration strategy
is the determination of parameter sets that reflect a "realistic" model
behavior. Previous studies have shown that parameter estimates for different
calibration periods can be significantly different. This questions model
transposability in time, which is one of the key conditions for the set-up of
a "realistic" model. This paper presents a new approach that selects
parameter sets that provide a consistent model performance in time. The
approach consists of testing model performance in different periods, and
selecting parameter sets that are as close as possible to the optimum of each
individual sub-period. While aiding model calibration, the approach is also
useful as a diagnostic tool, illustrating tradeoffs in the identification of
time-consistent parameter sets. The approach is applied to a case study in
Luxembourg using the HyMod hydrological model as an example. |
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