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URN: urn:nbn:de:kobv:517-opus-45114
URL: http://opus.kobv.de/ubp/volltexte/2010/4511/


Reusser, Dominik ; Blume, Theresa ; Schaefli, Bettina ; Zehe, Erwin

Analysing the temporal dynamics of model performance for hydrological models

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Kurzfassung in Englisch

The temporal dynamics of hydrological model performance gives insights into errors that cannot be obtained from global performance measures assigning a single number to the fit of a simulated time series to an observed reference series. These errors can include errors in data, model parameters, or model structure. Dealing with a set of performance measures evaluated at a high temporal resolution implies analyzing and interpreting a high dimensional data set. This paper presents a method for such a hydrological model performance assessment with a high temporal resolution and illustrates its application for two very different rainfall-runoff modeling case studies. The first is the Wilde Weisseritz case study, a headwater catchment in the eastern Ore Mountains, simulated with the conceptual model WaSiM-ETH. The second is the Malalcahuello case study, a headwater catchment in the Chilean Andes, simulated with the physicsbased model Catflow. The proposed time-resolved performance assessment starts with the computation of a large set of classically used performance measures for a moving window. The key of the developed approach is a data-reduction method based on self-organizing maps (SOMs) and cluster analysis to classify the high-dimensional performance matrix. Synthetic peak errors are used to interpret the resulting error classes. The final outcome of the proposed method is a time series of the occurrence of dominant error types. For the two case studies analyzed here, 6 such error types have been identified. They show clear temporal patterns, which can lead to the identification of model structural errors.

Freie Schlagwörter (Englisch): Rainfall-runoff response , Process identification , Improved calibration , Soil-moisture , Catchment
Institut: Institut für Geoökologie
DDC-Sachgruppe: Geowissenschaften
Dokumentart: c Postprint
Schriftenreihe: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372
Bandnummer: paper 140
Quelle: Hydrology and earth system sciences 13 (2009), 7, S. 999 - 1018
Sprache: Englisch
Erstellungsjahr: 2009
Publikationsdatum: 19.07.2010
Bemerkung:
The article was originally published by Copernicus Publications:
Hydrology and Earth System Sciences. - 13 (2009), 7, S. 999-1018
ISSN 1027-5606
Lizenz: Dieses Werk ist unter einer Creative Commons-Lizenz lizenziert.
Lizenz-Logo  Creative Commons - Attribution 3.0 unported


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