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CHIMERE21 : Evolution du régime hydrologique de la Meuse et de la Chiers au 21e siècle

Abstract : This paper presents the aims of the CHIMERE21 project and the first results of this work. CHIMERE21 is funded by the French Rhin-Meuse Water Agency (Agence de l’Eau Rhin Meuse) and aims to update hydrological projections across the French part of the Meuse River catchment based on the last up-to-date climatic projections. In order to extensively account for the diverse sources of uncertainty related to climate change impact modelling, two greenhouse gas emissions scenarios, five couples of global and regional climate models, one or two downscaling methods, and four hydrological models calibrated in six different ways were used in this project. This paper focuses on the improvement of the observed hydro-climatic database in the Meuse River catchment (naturalisation of observed discharge and improvement of the climate data over transboundary catchments) and on the evaluation of performance and temporal replicability of the hydrological models. The analysis concluded on a very high model performance for the hydrological regime and the low-flow season, across the 16 gauging stations selected on this catchment. Moreover, models show a very good temporal replicability, with high model performances shown on independent periods.
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https://hal.inrae.fr/hal-02609951
Contributor : Migration Irstea Publications <>
Submitted on : Monday, July 5, 2021 - 9:23:18 AM
Last modification on : Tuesday, September 7, 2021 - 3:54:48 PM

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  • HAL Id : hal-02609951, version 1
  • IRSTEA : PUB00063801

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G. Thirel, Lila Collet, P. Etchevers, D. Francois, J. Gailhard, et al.. CHIMERE21 : Evolution du régime hydrologique de la Meuse et de la Chiers au 21e siècle. UNESCO-SHF, Sécheresses, étiages et déficits en eau, Dec 2019, Paris, France. pp.16. ⟨hal-02609951⟩

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