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2011-08-18Zeitschriftenartikel DOI: 10.18452/18613
Climatic mass balance of the ice cap Vestfonna, Svalbard: A spatially distributed assessment using ERA-Interim and MODIS data
dc.contributor.authorMöller, Marco
dc.contributor.authorFinkelnburg, Roman
dc.contributor.authorBraun, Matthias
dc.contributor.authorHock, Regine
dc.contributor.authorJonsell, Ulf
dc.contributor.authorPohjola, Veijo A
dc.contributor.authorScherer, Dieter
dc.contributor.authorSchneider, Christoph
dc.date.accessioned2017-12-15T11:03:24Z
dc.date.available2017-12-15T11:03:24Z
dc.date.issued2011-08-18
dc.identifier.issn0148-0227
dc.identifier.other10.1029/2010JF001905
dc.identifier.urihttp://edoc.hu-berlin.de/18452/19312
dc.description.abstractThe ice cap Vestfonna in the northern Svalbard archipelago is one of the largest ice bodies of the European Arctic (∼2400 km2), but little is known about its mass balance. We model the climatic mass balance of the ice cap for the period September 2000 to August 2009 on a daily basis. Ablation is calculated by a spatially distributed temperature-radiation-index melt model. Air temperature forcing is provided by ERA-Interim data that is downscaled using data from an automatic weather station operated on the ice cap. Spatially distributed net shortwave radiation fluxes are obtained from standard trigonometric techniques combined with Moderate Resolution Imaging Spectroradiometer-based cloud cover and surface albedo information. Accumulation is derived from ERA-Interim precipitation data that are bias corrected and spatially distributed as a function of elevation. Refreezing is incorporated using the Pmax approach. Results indicate that mass balance years are characterized by short ablation seasons (June to August) and correspondingly longer accumulation periods (September to May). The modeled, annual climatic mass balance rate shows an almost balanced mean of −0.02 ± 0.20 m w.e. yr−1 (meters water equivalent per year) with an associated equilibrium line altitude of 383 ± 54 m above sea level (mean ± one standard deviation). The mean winter balance is +0.32 ± 0.06 m w.e. yr−1, and the mean summer balance −0.35 ± 0.17 m w.e. yr−1. Roughly one fourth of total surface ablation is retained by refreezing indicating that refreezing is an important component of the mass budget of Vestfonna.eng
dc.language.isoeng
dc.publisherHumboldt-Universität zu Berlin
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subject.ddc914 Geografie Europas und Reisen in Europa
dc.titleClimatic mass balance of the ice cap Vestfonna, Svalbard: A spatially distributed assessment using ERA-Interim and MODIS data
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/19312-3
dc.identifier.doihttp://dx.doi.org/10.18452/18613
dc.type.versionpublishedVersion
local.edoc.container-titleJournal of Geophysical Research
local.edoc.pages14
local.edoc.type-nameZeitschriftenartikel
local.edoc.institutionMathematisch-Naturwissenschaftliche Fakultät
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-publisher-nameAGU Publications
local.edoc.container-volume116
local.edoc.container-issueF3
dc.description.versionPeer Reviewed

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