Summary: Global warming increases flood risk in mountainous areas
and F. Laio1
Received 19 October 2009; revised 18 November 2009; accepted 23 November 2009; published 24 December 2009.
Citation: Allamano, P., P. Claps, and F. Laio (2009), Global
warming increases flood risk in mountainous areas, Geophys. Res.
Lett., 36, L24404, doi:10.1029/2009GL041395.
 The paper aims at assessing the impact of global
warming on flood risk in mountainous regions, providing
measurable evidence of possible hydrologic changes due to
temperature increase. It shows that large floods in mountain
basins are now more frequent than in the past and that they
may become even more frequent under global warming.
The morpho-climatic model used for prediction is very
simple and does not require calibration, which makes it
suitable for application in scarcely gauged mountainous
areas of the world.
 Mountainous regions account for one fourth of the
Earth land surface and are inhabited by 800 millions of