To provide quantitative elements to the expected rate of change of flood quantiles in Alpine basins due to global warming, a systematical assessment of a river network is undertaken in this paper through the implementation of a geomorphoclimatic approach. The model, called “FloodAlp” produces the flood frequency curve of mountainous catchments based on the stochastic interaction of precipitation and temperature. In view of a widespread application, FloodAlp was revamped here and applied to all the sections of the river network of the Chisone basin (Northwest Italy) identified through a 50 m resolution digital elevation model (DEM). We show that, based on the decrease in snow-affected contributing areas, flood frequency can increase up to 8 times compared to the current frequency, with amplifications depending on the local elevation characteristics of sub-basins.

Flooding risk from global warming in Alpine basins: an estimate along a stream network / Monforte, Irene; Evangelista, Giulia; Claps, Pierluigi. - In: ENVIRONMENTAL SCIENCES PROCEEDINGS. - ISSN 2673-4931. - ELETTRONICO. - (2022). (Intervento presentato al convegno International Conference EWaS (Efficient Water Systems) 5 tenutosi a Napoli nel 12 - 15 luglio 2022) [10.3390/environsciproc2022021022].

Flooding risk from global warming in Alpine basins: an estimate along a stream network

Monforte, irene;Evangelista, Giulia;Claps, Pierluigi
2022

Abstract

To provide quantitative elements to the expected rate of change of flood quantiles in Alpine basins due to global warming, a systematical assessment of a river network is undertaken in this paper through the implementation of a geomorphoclimatic approach. The model, called “FloodAlp” produces the flood frequency curve of mountainous catchments based on the stochastic interaction of precipitation and temperature. In view of a widespread application, FloodAlp was revamped here and applied to all the sections of the river network of the Chisone basin (Northwest Italy) identified through a 50 m resolution digital elevation model (DEM). We show that, based on the decrease in snow-affected contributing areas, flood frequency can increase up to 8 times compared to the current frequency, with amplifications depending on the local elevation characteristics of sub-basins.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2972614