Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 44, Issue 5, Pages 2343-2351Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/2016GL072422
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Funding
- Royal Society of New Zealand [RDF-VUW1501, VUW1203]
- Antarctic Research Centre (Victoria University of Wellington)
- New Zealand Ministry for Business, Innovation and Employment [CO5X1001]
- GNS Science
- NASA grants [NNX13AM16G, NNX13AK27G]
- NASA [NNX13AM16G, 469331, NNX13AK27G, 471916] Funding Source: Federal RePORTER
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Models predict considerable spatial variability in the magnitude of future climate change around Antarctica, suggesting that some sectors of the continent may be more affected by these changes than others. Furthermore, the geometry of the bedrock topography underlying the East and West Antarctic ice sheets, together with regional differences in ice thickness, mean that certain ice drainage basins may respond more or less sensitively to environmental forcings. Here we use an ensemble of idealized climates to drive ice-sheet simulations that explore regional and continental-scale thresholds, allowing us to identify a hierarchy of catchment vulnerabilities based on differences in long-term catchment-averaged ice loss. Considering this hierarchy in the context of recent observations and climate scenarios forecast for 2100 CE, we conclude that the majority of future ice loss from East Antarctica, both this century and over subsequent millennia, will likely come from the Recovery subglacial basin in the eastern Weddell Sea.
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