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Picturing and modeling catchments by representative hillslopes

Loritz, R. 1; Hassler, S. K. 1; Jackisch, C. 1; Allroggen, N.; Van Schaik, L.; Wienhöfer, J. ORCID iD icon 1; Zehe, E. 1
1 Institut für Wasser und Gewässerentwicklung (IWG), Karlsruher Institut für Technologie (KIT)

Abstract:

This study explores the suitability of a single hillslope as a parsimonious representation of a catchment in a physically based model. We test this hypothesis by picturing two distinctly different catchments in perceptual models and translating these pictures into parametric setups of 2-D physically based hillslope models. The model parametrizations are based on a comprehensive field data set, expert knowledge and process-based reasoning. Evaluation against streamflow data highlights that both models predicted the annual pattern of streamflow generation as well as the hydrographs acceptably. However, a look beyond performance measures revealed deficiencies in streamflow simulations during the summer season and during individual rainfall–runoff events as well as a mismatch between observed and simulated soil water dynamics. Some of these shortcomings can be related to our perception of the systems and to the chosen hydrological model, while others point to limitations of the representative hillslope concept itself. Nevertheless, our results confirm that representative hillslope models are a suitable tool to assess the importance of different data sources as well as to challenge our perception of the dominant hydrological processes we want to represent therein. ... mehr


Volltext §
DOI: 10.5445/IR/1000067848
Originalveröffentlichung
DOI: 10.5194/hess-21-1225-2017
Scopus
Zitationen: 42
Web of Science
Zitationen: 45
Dimensions
Zitationen: 57
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Wasser und Gewässerentwicklung (IWG)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1027-5606, 1607-7938
urn:nbn:de:swb:90-678484
KITopen-ID: 1000067848
Erschienen in Hydrology and earth system sciences
Verlag Copernicus Publications
Band 21
Heft 2
Seiten 1225-1249
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Scopus
Web of Science
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