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Large ice loss variability at Nioghalvfjerdsfjorden Glacier, NE-Greenland

Mayer, Christoph and Schaffer, Janin and Hattermann, Tore and Floricioiu, Dana and Krieger, Lukas and Dodd, Paul and Kanzow, Thorsten and Schannwell, Clemens and Licciullo, Carlo (2018) Large ice loss variability at Nioghalvfjerdsfjorden Glacier, NE-Greenland. Nature Communications, 9, pp. 1-11. Nature Publishing Group. doi: 10.1038/s41467-018-05180-x. ISSN 2041-1723.

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Official URL: https://www.nature.com/articles/s41467-018-05180-x


Nioghalvfjerdsfjorden is a major outlet glacier in Northeast-Greenland. Although earlier studies showed that the floating part near the grounding line thinned by 30% between 1999 and 2014, the temporal ice loss evolution, its relation to external forcing and the implications for the grounded ice sheet remain largely unclear. By combining observations of surface features, ice thickness and bedrock data, we find that the ice shelf mass balance has been out of equilibrium since 2001, with large variations of the thinning rates on annual/multiannual time scales. Changes in ice flux and surface ablation are too small to produce this variability. An increased ocean heat flux is the most plausible cause of the observed thinning. For sustained environmental conditions, the ice shelf will lose large parts of its area within a few decades and ice modeling shows a significant, but locally restricted thinning upstream of the grounding line in response.

Item URL in elib:https://elib.dlr.de/116723/
Document Type:Article
Title:Large ice loss variability at Nioghalvfjerdsfjorden Glacier, NE-Greenland
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mayer, Christophchristoph.mayer (at) lrz.badw-muenchen.dehttps://orcid.org/0000-0002-4226-4608
Schaffer, JaninAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12https://orcid.org/0000-0002-1395-7851
Hattermann, ToreAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12https://orcid.org/0000-0002-5538-2267
Floricioiu, DanaDana.Floricioiu (at) dlr.dehttps://orcid.org/0000-0002-1647-7191
Krieger, Lukaslukas.krieger (at) dlr.dehttps://orcid.org/0000-0002-2464-3102
Dodd, PaulNorwegian Polar Institute, Fram Centre, Postbox 6606 Langnes, 9296 Tromsø Tromsø, Norwayhttps://orcid.org/0000-0002-4236-9071
Kanzow, ThorstenAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12UNSPECIFIED
Schannwell, ClemensUniversity of Tübingen, Geologie & Geodynamik, Wilhelmstraße 56, D-72074 Tübingen, GermanyUNSPECIFIED
Licciullo, CarloBavarian Academy of Sciences and Humanities, Alfons-Goppel Str. 11, D-80539 Munich, GermanyUNSPECIFIED
Date:17 July 2018
Journal or Publication Title:Nature Communications
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1038/s41467-018-05180-x
Page Range:pp. 1-11
Publisher:Nature Publishing Group
Keywords:Climate-change impacts, Glacier, Ice Sheet, Greenland
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Krieger, Lukas
Deposited On:28 Jun 2018 09:51
Last Modified:18 Jul 2018 13:58

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