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| Titel |
Calibration of hydrological model parameters for ungauged catchments |
| VerfasserIn |
A. Bárdossy |
| 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 ; 11, no. 2 ; Nr. 11, no. 2 (2007-01-17), S.703-710 |
| Datensatznummer |
250009209
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| Publikation (Nr.) |
 copernicus.org/hess-11-703-2007.pdf |
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| Zusammenfassung |
| The parameters of hydrological models for catchments with few or no discharge
records can be estimated using regional information. One can assume that
catchments with similar characteristics show a similar hydrological behaviour
and thus can be modeled using similar model parameters. Therefore a
regionalisation of the hydrological model parameters on the basis of
catchment characteristics is plausible. However, due to the non-uniqueness of
the rainfall-runoff model parameters (equifinality), a workflow of regional
parameter estimation by model calibration and a subsequent fit of a regional
function is not appropriate. In this paper a different approach for the
transfer of entire parameter sets from one catchment to another is discussed.
Parameter sets are considered as tranferable if the corresponding model
performance (defined as the Nash-Sutclife efficiency) on the donor catchment
is good and the regional statistics: means and variances of annual discharges
estimated from catchment properties and annual climate statistics for the
recipient catchment are well reproduced by the model. The methodology is
applied to a set of 16 catchments in the German part of the Rhine catchments.
Results show that the parameters transfered according to the above criteria
perform well on the target catchments. |
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