The deglacial evolution of North Atlantic deep convection

Thornalley, David J. R., Barker, Stephen ORCID: https://orcid.org/0000-0001-7870-6431, Broecker, Wallace S., Elderfield, Henry and McCave, I. Nick 2011. The deglacial evolution of North Atlantic deep convection. Science 331 (6014) , pp. 202-205. 10.1126/science.1196812

Full text not available from this repository.

Abstract

Deepwater formation in the North Atlantic by open-ocean convection is an essential component of the overturning circulation of the Atlantic Ocean, which helps regulate global climate. We use water-column radiocarbon reconstructions to examine changes in northeast Atlantic convection since the Last Glacial Maximum. During cold intervals, we infer a reduction in open-ocean convection and an associated incursion of an extremely radiocarbon (14C)–depleted water mass, interpreted to be Antarctic Intermediate Water. Comparing the timing of deep convection changes in the northeast and northwest Atlantic, we suggest that, despite a strong control on Greenland temperature by northeast Atlantic convection, reduced open-ocean convection in both the northwest and northeast Atlantic is necessary to account for contemporaneous perturbations in atmospheric circulation.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	G Geography. Anthropology. Recreation > GC Oceanography Q Science > QE Geology
Publisher:	American Association for the Advancement of Science
ISSN:	0036-8075
Last Modified:	18 Oct 2022 12:45
URI:	https://orca.cardiff.ac.uk/id/eprint/11088

Citation Data

Cited 128 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item