EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Better understand mountain hydrology to enhance climate change impact assessment

Youen Grusson1, Manon Dalibard1, Mélanie Raimonet1, Sabine Sauvage1, Gaël Leroux1, Santiago Begueria2, Leticia Palazon2, and José Miguel Sánchez Pérez1
Youen Grusson et al.
  • 1ECOLAB, Toulouse University, CNRS, INPT, UPS, Toulouse, France (
  • 2Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC)

Catchments of European mountains are essential because of their role to provide water to human society. Mountainous area regulate water flux through a complex system of storage and release, playing the role of water tower. Better understand the dynamic functioning of this system at the scale of each compartment and the relationships between the storage and releasing processes are important to understand the impact induced by climate change. In particular, the disappearance of snow during the winter will potentially modify the low flow water level and ecological flow in late spring and early summer, impacting the ecological services provided by e.g. ponds, peat or wetland. The presented study aims to identify the keys factors and their current role in this hydrological system of the Pyrenean Mountains, and identify critical hydrological conditions that will potentially impact the socio-ecological services related to water resources. This goal has been achieved by a development of a high resolution hydrological modeling framework at the scale of the entire Pyrenean massif, together with the study of lower scale representative systems (peatland) and the development of specific future climate scenarios, in order to suggest mitigation actions and adaptability action through water management.

How to cite: Grusson, Y., Dalibard, M., Raimonet, M., Sauvage, S., Leroux, G., Begueria, S., Palazon, L., and Sánchez Pérez, J. M.: Better understand mountain hydrology to enhance climate change impact assessment, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-18759,, 2020


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