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| Titel |
Integration and calibration of a conceptual rainfall-runoff model in the framework of a decision support system for river basin management |
| VerfasserIn |
J. Götzinger, A. Bárdossy |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Proceedings of the 8th Workshop for Large Scale Hydrological Modelling - Oppurg 2004 ; Nr. 5 (2005-12-16), S.31-35 |
| Datensatznummer |
250002164
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| Publikation (Nr.) |
 copernicus.org/adgeo-5-31-2005.pdf |
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| Zusammenfassung |
| Water balance models provide significant input to integrated models that are
used to simulate river basin processes. However, one of the primary problems
involves the coupling and simultaneous calibration of rainfall-runoff and
groundwater models. This problem manifests itself through circular arguments
- the hydrologic model is modified to calculate highly discretized
groundwater recharge rates as input to the groundwater model which provides
modeled base flow for the flood-routing module of the rainfall-runoff model.
A possibility to overcome this problem using a modified version of the HBV
Model is presented in this paper. Regionalisation and optimization methods
lead to objective and efficient calibration despite large numbers of
parameters. The representation of model parameters by transfer functions of
catchment characteristics enables consistent parameter estimation. By
establishing such relationships, models are calibrated for the parameters of
the transfer functions instead of the model parameters themselves. Simulated
annealing, using weighted Nash-Sutcliffe-coefficients of variable temporal
aggregation, assists in efficient parameterisations. The simulations are
compared to observed discharge and groundwater recharge modeled by the State
Institute for Environmental Protection Baden-Württemberg using the model
TRAIN-GWN. |
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