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Southern Hemisphere westerlies as a driver of the early deglacial atmospheric CO2 rise

Menviel, L; Spence, Paul; Yu, Jimin; Chamberlain, M A; Matear, R.J.; Meissner, K.J.; England, Matthew Heathcote


The early part of the last deglaciation is characterised by a similar to 40 ppm atmospheric CO2 rise occurring in two abrupt phases. The underlying mechanisms driving these increases remain a subject of intense debate. Here, we successfully reproduce changes in CO2, delta C-13 and Delta C-14 as recorded by paleo-records during Heinrich stadial 1 (HS1). We show that HS1 CO2 increase can be explained by enhanced Southern Ocean upwelling of carbon-rich Pacific deep and intermediate waters,...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Nature Communications
DOI: 10.1038/s41467-018-04876-4
Access Rights: Open Access


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