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Future sea level change from Antarctica's Lambert-Amery glacial system
Citation
Pittard, ML and Galton-Fenzi, BK and Watson, CS and Roberts, JL, Future sea level change from Antarctica's Lambert-Amery glacial system, Geophysical Research Letters, 44, (14) pp. 7347-7355. ISSN 0094-8276 (2017) [Refereed Article]
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Copyright Statement
©2017. American Geophysical Union
Abstract
Future global mean sea level (GMSL) change is dependent on the complex response of the Antarctic ice sheet to ongoing changes and feedbacks in the climate system. The Lambert-Amery glacial system has been observed to be stable over the recent period yet is potentially at risk of rapid grounding line retreat and ice discharge given that a significant volume of its ice is grounded below sea level, making its future contribution to GMSL uncertain. Using a regional ice sheet model of the Lambert-Amery system, we find that under a range of future warming and extreme scenarios, the simulated grounding line remains stable and does not trigger rapid mass loss from grounding line retreat. This allows for increased future accumulation to exceed the mass loss from ice dynamical changes. We suggest that the Lambert-Amery glacial system will remain stable or gain ice mass and mitigate a portion of potential future sea level rise over the next 500 years, with a range of +3.6 to −117.5 mm GMSL equivalent.
Item Details
Item Type: | Refereed Article |
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Keywords: | ice flow, sea level change, climate change, ice sheet modelling |
Research Division: | Earth Sciences |
Research Group: | Physical geography and environmental geoscience |
Research Field: | Glaciology |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Understanding climate change |
Objective Field: | Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts) |
UTAS Author: | Pittard, ML (Mr Mark Pittard) |
UTAS Author: | Galton-Fenzi, BK (Dr Ben Galton-Fenzi) |
UTAS Author: | Watson, CS (Dr Christopher Watson) |
UTAS Author: | Roberts, JL (Dr Jason Roberts) |
ID Code: | 123692 |
Year Published: | 2017 |
Web of Science® Times Cited: | 8 |
Deposited By: | CRC-Antarctic Climate & Ecosystems |
Deposited On: | 2018-01-18 |
Last Modified: | 2018-05-18 |
Downloads: | 75 View Download Statistics |
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