From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?

The potential exploitation of areas becoming ice-free in response to ongoing climate change has rarely been addressed, although it could be of interest from the water management perspective. Here we present an estimate for the potential of mitigating projected changes in seasonal water availability...

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Main Authors: Daniel Farinotti, Alberto Pistocchi, Matthias Huss
Format: Article
Language:English
Published: IOP Publishing 2016-01-01
Series:Environmental Research Letters
Subjects:
Online Access:https://doi.org/10.1088/1748-9326/11/5/054022
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author Daniel Farinotti
Alberto Pistocchi
Matthias Huss
author_facet Daniel Farinotti
Alberto Pistocchi
Matthias Huss
author_sort Daniel Farinotti
collection DOAJ
description The potential exploitation of areas becoming ice-free in response to ongoing climate change has rarely been addressed, although it could be of interest from the water management perspective. Here we present an estimate for the potential of mitigating projected changes in seasonal water availability from melting glaciers by managing runoff through reservoirs. For the European Alps we estimate that by the end of the century, such a strategy could offset up to 65% of the expected summer-runoff changes from presently glacierized surfaces. A first-order approach suggests that the retention volume potentially available in the areas becoming deglacierized is in excess of the volume required for achieving the maximal possible mitigation by more than one order of magnitude. Obviously, however, such a strategy cannot compensate for the reduction in annual runoff caused by glacier ice depletion. Our estimates indicate that by 2070–2099, 0.73 ± 0.67 km ^3 a ^−1 of this non-renewable component of the water cycle could be missing in Alpine water supplies.
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spelling doaj.art-9dec6ddaac534091b24d114afd8f976a2023-08-09T14:18:17ZengIOP PublishingEnvironmental Research Letters1748-93262016-01-0111505402210.1088/1748-9326/11/5/054022From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?Daniel Farinotti0https://orcid.org/0000-0003-3417-4570Alberto Pistocchi1https://orcid.org/0000-0002-3696-873XMatthias Huss2Swiss Federal Institute for Forest , Snow and Landscape Research (WSL), Birmensdorf, SwitzerlandEuropean Commission, DG Joint Research Centre (JRC), Institute for Environment and Sustainability , Ispra, ItalyDepartment of Geosciences, University of Fribourg , Fribourg, Switzerland; Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, Zurich, SwitzerlandThe potential exploitation of areas becoming ice-free in response to ongoing climate change has rarely been addressed, although it could be of interest from the water management perspective. Here we present an estimate for the potential of mitigating projected changes in seasonal water availability from melting glaciers by managing runoff through reservoirs. For the European Alps we estimate that by the end of the century, such a strategy could offset up to 65% of the expected summer-runoff changes from presently glacierized surfaces. A first-order approach suggests that the retention volume potentially available in the areas becoming deglacierized is in excess of the volume required for achieving the maximal possible mitigation by more than one order of magnitude. Obviously, however, such a strategy cannot compensate for the reduction in annual runoff caused by glacier ice depletion. Our estimates indicate that by 2070–2099, 0.73 ± 0.67 km ^3 a ^−1 of this non-renewable component of the water cycle could be missing in Alpine water supplies.https://doi.org/10.1088/1748-9326/11/5/054022glacier meltdam storageclimate changemitigation
spellingShingle Daniel Farinotti
Alberto Pistocchi
Matthias Huss
From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?
Environmental Research Letters
glacier melt
dam storage
climate change
mitigation
title From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?
title_full From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?
title_fullStr From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?
title_full_unstemmed From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?
title_short From dwindling ice to headwater lakes: could dams replace glaciers in the European Alps?
title_sort from dwindling ice to headwater lakes could dams replace glaciers in the european alps
topic glacier melt
dam storage
climate change
mitigation
url https://doi.org/10.1088/1748-9326/11/5/054022
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