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Abstract
The evolution of past global ice sheets is highly uncertain. This paper presents PaleoMIST 1.0, a global ice sheet reconstruction for the past 80,000 years, constructed independently of far-field sea level and δ¹⁸O proxy records. The reconstruction resolves the "missing ice" problem during the Last Glacial Maximum (LGM) by being compatible with LGM far-field sea-level records without requiring extra ice volume. However, it does not match proxy-based sea level reconstructions for Marine Isotope Stage 3 (MIS 3), suggesting a more complex relationship between marine δ¹⁸O and sea level than previously assumed.
Publisher
Nature Communications
Published On
Feb 23, 2021
Authors
Evan J. Gowan, Xu Zhang, Sara Khosravi, Alessio Rovere, Paolo Stocchi, Anna L. C. Hughes, Richard Gyllencreutz, Jan Mangerud, John-Inge Svendsen, Gerrit Lohmann
Tags
ice sheets
PaleoMIST 1.0
Last Glacial Maximum
sea level reconstructions
marine δ¹⁸O
Paleoenvironment
climate change
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