Shepherd, A orcid.org/0000-0002-4914-1299, Gilbert, L, Muir, AS et al. (7 more authors) (2019) Trends in Antarctic Ice Sheet Elevation and Mass. Geophysical Research Letters, 46 (14). pp. 8174-8183. ISSN 0094-8276
Abstract
Fluctuations in Antarctic Ice Sheet elevation and mass occur over a variety of time scales, owing to changes in snowfall and ice flow. Here we disentangle these signals by combining 25 years of satellite radar altimeter observations and a regional climate model. From these measurements, patterns of change that are strongly associated with glaciological events emerge. While the majority of the ice sheet has remained stable, 24% of West Antarctica is now in a state of dynamical imbalance. Thinning of the Pine Island and Thwaites glacier basins reaches 122 m in places, and their rates of ice loss are now five times greater than at the start of our survey. By partitioning elevation changes into areas of snow and ice variability, we estimate that East and West Antarctica have contributed −1.1 ± 0.4 and +5.7 ± 0.8 mm to global sea level between 1992 and 2017.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019, The Authors. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
Keywords: | climate; Antarctica; satellite; altimetry; imbalance; sea level |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Funding Information: | Funder Grant number European Space Agency No External Reference |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Aug 2019 09:29 |
Last Modified: | 25 Jun 2023 21:57 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1029/2019GL082182 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149529 |
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