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Multi-model data fusion as a tool for PUB: example in a Swedish mesoscale catchment
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL. (Luft-, vatten- och landskapslära)
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2011 (English)In: Advances in Geosciences, ISSN 1680-7340, E-ISSN 1680-7359, Vol. 29, 43-50 p.Article in journal (Refereed) Published
Abstract [en]

Post-processing the output of different rainfall-runoff models allows one to pool strengths of each model to produce more reliable predictions. As a new approach in the frame of the "Prediction in Ungauged Basins" initiative, this study investigates the geographical transferability of different parameter sets and data-fusion methods which were applied to 5 different rainfall-runoff models for a low-land catchment in Central Sweden. After usual calibration, we adopted a proxy-basin validation approach between two similar but non-nested sub-catchments in order to simulate ungauged conditions. Many model combinations outperformed the best single model predictions with improvements of efficiencies from 0.70 for the best single model predictions to 0.77 for the best ensemble predictions. However no "best" data-fusion method could be determined as similar performances were obtained with different merging schemes. In general, poorer model performance, i.e. lower efficiency, was less likely to occur for ensembles which included more individual models.

Place, publisher, year, edition, pages
Copernicus Publications , 2011. Vol. 29, 43-50 p.
National Category
Oceanography, Hydrology, Water Resources
Research subject
Hydrology
Identifiers
URN: urn:nbn:se:uu:diva-164909DOI: 10.5194/adgeo-29-43-2011OAI: oai:DiVA.org:uu-164909DiVA: diva2:470862
Available from: 2011-12-30 Created: 2011-12-30 Last updated: 2017-12-08Bibliographically approved

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Publisher's full texthttp://www.adv-geosci.net/29/43/2011/http://www.adv-geosci.net/29/43/2011/adgeo-29-43-2011.pdf

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Seibert, Jan

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