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Climate Extrapolations in Hydrology: The Expanded Bluecat Methodology

Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens, Heroon Polytechneiou 5, GR-157 80 Zographou, Greece
Department of Civil, Chemical, Environmental and Materials Engineering (DICAM), University of Bologna, Via del Risorgimento 2, 40136 Bologna, Italy
Author to whom correspondence should be addressed.
Academic Editors: Ezio Todini and Tammo Steenhuis
Hydrology 2022, 9(5), 86;
Received: 26 April 2022 / Revised: 6 May 2022 / Accepted: 10 May 2022 / Published: 12 May 2022
(This article belongs to the Collection Feature Papers of Hydrology)
Bluecat is a recently proposed methodology to upgrade a deterministic model (D-model) into a stochastic one (S-model), based on the hypothesis that the information contained in a time series of observations and the concurrent predictions made by the D-model is sufficient to support this upgrade. The prominent characteristics of the methodology are its simplicity and transparency, which allow its easy use in practical applications, without sophisticated computational means. In this paper, we utilize the Bluecat methodology and expand it in order to be combined with climate model outputs, which often require extrapolation out of the range of values covered by observations. We apply the expanded methodology to the precipitation and temperature processes in a large area, namely the entire territory of Italy. The results showcase the appropriateness of the method for hydroclimatic studies, as regards the assessment of the performance of the climate projections, as well as their stochastic conversion with simultaneous bias correction and uncertainty quantification. View Full-Text
Keywords: Bluecat; climate models; stochastics; uncertainty Bluecat; climate models; stochastics; uncertainty
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MDPI and ACS Style

Koutsoyiannis, D.; Montanari, A. Climate Extrapolations in Hydrology: The Expanded Bluecat Methodology. Hydrology 2022, 9, 86.

AMA Style

Koutsoyiannis D, Montanari A. Climate Extrapolations in Hydrology: The Expanded Bluecat Methodology. Hydrology. 2022; 9(5):86.

Chicago/Turabian Style

Koutsoyiannis, Demetris, and Alberto Montanari. 2022. "Climate Extrapolations in Hydrology: The Expanded Bluecat Methodology" Hydrology 9, no. 5: 86.

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