Towards a more consistent eco-hydrological modelling through multi-objective calibration
- Most hydrological studies rely on a model calibrated using discharge alone. However, judging the model reliability based on such calibration is problematic, as it does not guarantee the correct representation of internal hydrological processes. This study aims (a) to develop a comprehensive multi-objective calibration framework using remote sensing vegetation data and hydrological signatures (flow duration curve - FDC, and baseflow index) in addition to discharge, and (b) to apply this framework for calibration of the Soil and Water Assessment Tool (SWAT) in a typical Andean catchment. Overall, our calibration approach outperformed traditional discharge-based and FDC signature-based calibration strategies in terms of vegetation, streamflow, and flow partitioning simulation. New hydrological insights for the region are the following: baseflow is the main component of the streamflow sustaining the long dry-season flow, and pasture areas offer higher water yield and baseflow than other land-cover types. The proposed approach could beMost hydrological studies rely on a model calibrated using discharge alone. However, judging the model reliability based on such calibration is problematic, as it does not guarantee the correct representation of internal hydrological processes. This study aims (a) to develop a comprehensive multi-objective calibration framework using remote sensing vegetation data and hydrological signatures (flow duration curve - FDC, and baseflow index) in addition to discharge, and (b) to apply this framework for calibration of the Soil and Water Assessment Tool (SWAT) in a typical Andean catchment. Overall, our calibration approach outperformed traditional discharge-based and FDC signature-based calibration strategies in terms of vegetation, streamflow, and flow partitioning simulation. New hydrological insights for the region are the following: baseflow is the main component of the streamflow sustaining the long dry-season flow, and pasture areas offer higher water yield and baseflow than other land-cover types. The proposed approach could be used in other data-scarce regions with complex topography.…
Author details: | Carlos Antonio Fernandez-PalominoORCiD, Fred HattermannORCiDGND, Valentina KrysanovaORCiDGND, Fiorella Vega-JacomeORCiD, Axel BronstertORCiDGND |
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URN: | urn:nbn:de:kobv:517-opus4-568766 |
DOI: | https://doi.org/10.25932/publishup-56876 |
ISSN: | 1866-8372 |
Title of parent work (German): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe |
Subtitle (English): | a case study in the Andean Vilcanota River basin, Perú |
Publication series (Volume number): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (1377) |
Publication type: | Postprint |
Language: | English |
Date of first publication: | 2020/11/30 |
Publication year: | 2020 |
Publishing institution: | Universität Potsdam |
Release date: | 2024/03/20 |
Tag: | Andes; SWAT; eco-hydrology; equifinality; hydrological signatures; remote sensing |
Issue: | 1377 |
Number of pages: | 18 |
Source: | Hydrological Sciences Journal, 66:1, 59-74, DOI: 10.1080/02626667.2020.1846740 |
Funding institution: | East Africa Peru India Climate Capacities (EPICC) project |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Umweltwissenschaften und Geographie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
Peer review: | Referiert |
Publishing method: | Open Access / Green Open-Access |
License (German): | CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International |
External remark: | Bibliographieeintrag der Originalveröffentlichung/Quelle |