Numerical simulations of the (de)stabilization of the West Antarctic Ice Sheet

Feldmann, Johannes; Levermann, Anders; Mengel, Matthias

doi:10.1594/PANGAEA.907702

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Numerical simulations of the (de)stabilization of the West Antarctic Ice Sheet

Feldmann, J., Levermann, A., Mengel, M. (2019): Numerical simulations of the (de)stabilization of the West Antarctic Ice Sheet.
https://doi.org/10.1594/PANGAEA.907702

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Datensatz-Permalink: https://publications.pik-potsdam.de/pubman/item/item_25427 Versions-Permalink: https://publications.pik-potsdam.de/pubman/item/item_25427_1

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Urheber:
Feldmann, Johannes¹, Autor
Levermann, Anders¹, Autor
Mengel, Matthias¹, Autor

Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13

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Schlagwörter: SPP 1158

Zusammenfassung: There is evidence that a self-sustaining ice discharge from the West Antarctic Ice Sheet (WAIS) has started, potentially leading to its disintegration. The associated sea level rise of more than 3m would pose a serious challenge to highly populated areas including metropolises such as Calcutta, Shanghai, New York City, and Tokyo. Here, we show that the WAIS may be stabilized through mass deposition in coastal regions around Pine Island and Thwaites glaciers. In our numerical simulations, a minimum of 7400 Gt of additional snowfall stabilizes the flow if applied over a short period of 10 years onto the region (−2 mm year−1 sea level equivalent). Mass deposition at a lower rate increases the intervention time and the required total amount of snow. We find that the precise conditions of such an operation are crucial, and potential benefits need to be weighed against environmental hazards, future risks, and enormous technical challenges.

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Sprache(n): eng - Englisch

Datum: Online veröffentlicht: 2019Final veröffentlicht: 2019

Publikationsstatus: Final veröffentlicht

Seiten: -

Ort, Verlag, Ausgabe: Bremerhaven : Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research (AWI) / PANGAEA

Inhaltsverzeichnis: -

Art der Begutachtung: Keine Begutachtung

Identifikatoren: DOI: 10.1594/PANGAEA.907702
PIKDOMAIN: RD1 - Earth System Analysis
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD1 - Earth System Analysis
Organisational keyword: RD4 - Complexity Science
Working Group: Ice Dynamics
Research topic keyword: Ice
Research topic keyword: Sea-level Rise
Regional keyword: Arctic & Antarctica
MDB-ID: yes - 3144

Art des Abschluß: -