Assessing downscaling methods to simulate hydrologically relevant weather scenarios from a global atmospheric reanalysis: case study of the upper Rhône River (1902–2009)

Caroline Legrand, Benoît Hingray, Bruno Wilhelm, and Martin Ménégoz

Supplement

https://doi.org/10.5194/hess-28-2139-2024-supplement

Data sets

Climate simulation over the European Alps for the period 1902-2010 produced with the model MAR, MAR_Alps_v0 Martin Ménégoz et al. https://doi.org/10.5281/zenodo.3674607

Short summary

Climate change is expected to increase flood hazard worldwide. The evolution is typically estimated from multi-model chains, where regional hydrological scenarios are simulated from weather scenarios derived from coarse-resolution atmospheric outputs of climate models. We show that two such chains are able to reproduce, from an atmospheric reanalysis, the 1902–2009 discharge variations and floods of the upper Rhône alpine river, provided that the weather scenarios are bias-corrected.