Subglacial discharge accelerates future retreat of Denman and Scott Glaciers, East Antarctica

dc.contributor.authorPelle, Tyler
dc.contributor.authorGreenbaum, Jamin S.
dc.contributor.authorDow, Christine F.
dc.contributor.authorJenkins, Adrian
dc.contributor.authorMorlighem, Mathieu
dc.date.accessioned2024-08-12T15:01:32Z
dc.date.available2024-08-12T15:01:32Z
dc.date.issued2023-10-27
dc.descriptionCopyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
dc.description.abstractIce shelf basal melting is the primary mechanism driving mass loss from the Antarctic Ice Sheet, yet it is unknown how the localized melt enhancement from subglacial discharge will affect future Antarctic glacial retreat. We develop a parameterization of ice shelf basal melt that accounts for both ocean and subglacial discharge forcing and apply it in future projections of Denman and Scott Glaciers, East Antarctica, through 2300. In forward simulations, subglacial discharge accelerates the onset of retreat of these systems into the deepest continental trench on Earth by 25 years. During this retreat, Denman Glacier alone contributes 0.33 millimeters per year to global sea level rise, comparable to half of the contemporary sea level contribution of the entire Antarctic Ice Sheet. Our results stress the importance of resolving complex interactions between the ice, ocean, and subglacial environments in future Antarctic Ice Sheet projections.
dc.description.sponsorshipNASA Cryosphere program, 80NSSC22K0387 || NSF, OPP-2114454 || Cecil H. and Ida M. Green Foundation for Earth Sciences at the Institute of Geophysics and Planetary Physics at Scripps Institutions of Oceanography || Natural Sciences and Engineering Research Council of Canada, RGPIN-03761-2017 || Canada Research Chairs Program, 950-231237 || European Union's Horizon 2020 research and innovation programme, 820575.
dc.identifier.urihttps://doi.org/10.1126/sciadv.adi9014
dc.identifier.urihttps://hdl.handle.net/10012/20771
dc.language.isoen
dc.publisherAmerican Association for the Advancement of Science
dc.relation.ispartofseriesScience Advances; 9, 43
dc.rightsAttribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.titleSubglacial discharge accelerates future retreat of Denman and Scott Glaciers, East Antarctica
dc.typeArticle
dcterms.bibliographicCitationPelle, T., Greenbaum, J. S., Dow, C. F., Jenkins, A., & Morlighem, M. (2023). Subglacial discharge accelerates future retreat of Denman and Scott Glaciers, East Antarctica. Science Advances, 9(43). https://doi.org/10.1126/sciadv.adi9014
uws.contributor.affiliation1Faculty of Environment
uws.contributor.affiliation2Geography and Environmental Management
uws.peerReviewStatusReviewed
uws.scholarLevelFaculty
uws.typeOfResourceTexten

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