The influence of realistic 3D mantle viscosity on Antarctica’s contribution to future global sea levels-Reference-Cited by-同舟云学术

The influence of realistic 3D mantle viscosity on Antarctica’s contribution to future global sea levels

Published:2024-08-02 Issue:31 Volume:10 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Gomez Natalya¹^ORCID,Yousefi Maryam¹²^ORCID,Pollard David²³^ORCID,DeConto Robert M.³^ORCID,Sadai Shaina³⁴^ORCID,Lloyd Andrew⁵,Nyblade Andrew²^ORCID,Wiens Douglas A.⁶^ORCID,Aster Richard C.⁷^ORCID,Wilson Terry⁸^ORCID

Affiliation:

1. Earth and Planetary Sciences Department, McGill University, Montreal, Canada.

2. Department of Geosciences, Pennsylvania State University, State College, PA, USA.

3. Department of Earth, Geographic and Climate Sciences, University of Massachusetts Amherst, Amherst, MA, USA.

4. Union of Concerned Scientists, Cambridge, MA, USA.

5. Lamont Doherty Earth Observatory, Columbia University, New York, NY, USA.

6. Department of Earth, Environmental, & Planetary Sciences, Washington University, St. Louis, MO, USA.

7. Department of Geosciences, Warner College of Natural Resources, Colorado State University, Fort Collins, CO, USA.

8. School of Earth Sciences, Ohio State University, Columbus, OH, USA.

Abstract

The response of the Antarctic Ice Sheet (AIS) to climate change is the largest uncertainty in projecting future sea level. The impact of three-dimensional (3D) Earth structure on the AIS and future global sea levels is assessed here by coupling a global glacial isostatic adjustment model incorporating 3D Earth structure to a dynamic ice-sheet model. We show that including 3D viscous effects produces rapid uplift in marine sectors and reduces projected ice loss for low greenhouse gas emission scenarios, lowering Antarctica’s contribution to global sea level in the coming centuries by up to ~40%. Under high-emission scenarios, ice retreat outpaces uplift, and sea-level rise is amplified by water expulsion from Antarctic marine areas.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/sciadv.adn1470

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