Brief communication: On calculating the sea-level contribution in marine ice-sheet models

Abstract. Estimating the contribution of marine ice sheets to sea-level rise iscomplicated by ice grounded below sea level that is replaced by ocean waterwhen melted. The common approach is to only consider the ice volume abovefloatation, defined as the volume of ice to be removed from an ice column...

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Bibliographic Details
Main Authors: Goelzer, Heiko, Coulon, Violaine, Pattyn, Frank, de Boer, Bas, van de Wal, Roderik S W
Format: Article in Journal/Newspaper
Language:English
Published: 2020
Subjects:
Online Access:http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/303440
https://dipot.ulb.ac.be/dspace/bitstream/2013/303440/1/doi_287084.pdf
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Summary:Abstract. Estimating the contribution of marine ice sheets to sea-level rise iscomplicated by ice grounded below sea level that is replaced by ocean waterwhen melted. The common approach is to only consider the ice volume abovefloatation, defined as the volume of ice to be removed from an ice column tobecome afloat. With isostatic adjustment of the bedrock and externalsea-level forcing that is not a result of mass changes of the ice sheetunder consideration, this approach breaks down, because ice volume abovefloatation can be modified without actual changes in the sea-levelcontribution. We discuss a consistent and generalised approach forestimating the sea-level contribution from marine ice sheets. SCOPUS: ar.j info:eu-repo/semantics/published