Comparison of hydrological models for use in climate change studies: A test on 241 catchments in West and Central Africa - 30/11/19
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Handled by François Chabaux
Abstract |
The present work reports on the study and the comparison of the performance of three “Génie rural” (GR) and two Water Balance (WB) models. The calibration and robustness performances are analysed in the light of the hydro-climatic conditions. The study shows that the GR models are much more efficient and robust than the WB models. The behaviour of calibration performance as a function of hydroclimatic variables varies according to the model and goodness-of-fit criteria (GOFC). The GR models are more robust in terms of NSE(Q) and NSE(√Q) and the WB models in terms of KGE. For more robustness of the models, it is better to transfer the parameters to wetter periods or periods with a lower Potential EvapoTranspiration (PET) than the calibration period. For a loss of robustness of less than 20% for GR and 30% for WB, the variation between calibration and rain validation/PET periods must be around ±15%/±1.5%.
Le texte complet de cet article est disponible en PDF.Keywords : Rainfall-runoff modelling, Climate change, Model calibration, Model robustness, West and Central Africa
Plan
Vol 351 - N° 7
P. 477-486 - octobre 2019 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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