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Enhanced Mid-depth Southward Transport in the Northeast Atlantic at the Last Glacial Maximum Despite a Weaker AMOC

Menviel, L; Spence, P.; Skinner, L. C.; Tachikawa, K; Friedrich, Tobias; Missiaen, L.; Yu, Jimin


While previous studies consistently suggest that North Atlantic Deep Water (NADW) was shallower at the Last Glacial Maximum (LGM) than at pre-industrial, its strength is still controversial. Here, using a series of LGM experiments, we show that proxy records are consistent with a shallower and ∼50% weaker NADW, associated with a ∼3◦ equatorward shift of the sea ice edge and convection sites in the Norwegian Sea. A shoaling and weakening of NADW further allow penetration of Antarctic...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Paleoceanography and Paleoclimatology
DOI: 10.1029/2019PA003793


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