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dc.contributor.author
Naegeli, Kathrin
dc.contributor.author
Huss, Matthias
dc.date.accessioned
2017-12-18T17:25:20Z
dc.date.available
2017-10-24T02:24:19Z
dc.date.available
2017-12-18T17:25:20Z
dc.date.issued
2017
dc.identifier.issn
0260-3055
dc.identifier.other
10.1017/aog.2017.25
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/199494
dc.identifier.doi
10.3929/ethz-b-000199494
dc.description.abstract
Albedo is an important parameter in the energy balance of bare-ice surfaces and modulates glacier melt rates. The prolongation of the ablation period enforces the albedo feedback and highlights the need for profound knowledge on impacts of bare-ice albedo on glacier mass balance. In this study, we assess the mass balance sensitivity of 12 Swiss glaciers with abundant long-term in-situ data on changes in bare-ice albedo. We use pixel-based bare-ice albedo derived from Landsat 8. A distributed mass-balance model is applied to the period 1997–2016 and experiments are performed to assess the impact of albedo changes on glacier mass balance. Our results indicate that glacier-wide mass-balance sensitivities to changes in bare-ice albedo correlate strongly with mean annual mass balances (r 2 = 0.81). Large alpine glaciers react more sensitively to bare-ice albedo changes due to their ablation areas being situated at lower elevations. We find average sensitivities of glacier-wide mass balance of −0.14 m w.e. a−1 per 0.1 albedo decrease. Although this value is considerably smaller than sensitivity to air temperature change, we stress the importance of the enhanced albedo feedback that will be amplified due to atmospheric warming and a suspected darkening of glacier surface in the near future.
en_US
dc.language.iso
en
en_US
dc.publisher
Cambridge University Press
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
albedo
en_US
dc.subject
glacier mass balance
en_US
dc.subject
glacier modelling
en_US
dc.subject
mountain glaciers
en_US
dc.subject
remote sensing
en_US
dc.title
Sensitivity of mountain glacier mass balance to changes in bare-ice albedo
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2017-10-10
ethz.journal.title
Annals of Glaciology
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::08726 - Funk, Martin (Tit.-Prof.)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::08726 - Funk, Martin (Tit.-Prof.)
ethz.date.deposited
2017-10-24T02:24:20Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-12-18T17:25:23Z
ethz.rosetta.lastUpdated
2018-11-06T05:44:31Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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