Show simple item record

dc.contributor.advisor Lozier, M. Susan en_US
dc.contributor.author Bower, AS
dc.contributor.author Lozier, MS
dc.contributor.author Gary, SF
dc.contributor.author Böning, CW
dc.coverage.spatial England
dc.date.accessioned 2012-01-10T15:58:19Z
dc.date.issued 2009-05-14
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/19444214
dc.identifier nature07979
dc.identifier.citation Nature, 2009, 459 (7244), pp. 243 - 247
dc.identifier.uri http://hdl.handle.net/10161/4980
dc.description Dissertation en_US
dc.description.abstract To understand how our global climate will change in response to natural and anthropogenic forcing, it is essential to determine how quickly and by what pathways climate change signals are transported throughout the global ocean, a vast reservoir for heat and carbon dioxide. Labrador Sea Water (LSW), formed by open ocean convection in the subpolar North Atlantic, is a particularly sensitive indicator of climate change on interannual to decadal timescales. Hydrographic observations made anywhere along the western boundary of the North Atlantic reveal a core of LSW at intermediate depths advected southward within the Deep Western Boundary Current (DWBC). These observations have led to the widely held view that the DWBC is the dominant pathway for the export of LSW from its formation site in the northern North Atlantic towards the Equator. Here we show that most of the recently ventilated LSW entering the subtropics follows interior, not DWBC, pathways. The interior pathways are revealed by trajectories of subsurface RAFOS floats released during the period 2003-2005 that recorded once-daily temperature, pressure and acoustically determined position for two years, and by model-simulated 'e-floats' released in the subpolar DWBC. The evidence points to a few specific locations around the Grand Banks where LSW is most often injected into the interior. These results have implications for deep ocean ventilation and suggest that the interior subtropical gyre should not be ignored when considering the Atlantic meridional overturning circulation.
dc.format.extent 243 - 247
dc.language eng
dc.relation.ispartof Nature
dc.relation.isversionof 10.1038/nature07979
dc.title Interior pathways of the North Atlantic meridional overturning circulation.
dc.type Journal Article
dc.department Earth and Ocean Sciences en_US
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/19444214
pubs.issue 7244
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Nicholas School of the Environment
pubs.organisational-group /Duke/Nicholas School of the Environment/Earth and Ocean Sciences
pubs.organisational-group /Duke/Staff
pubs.publication-status Published
pubs.volume 459
dc.identifier.eissn 1476-4687

Files in this item

This item appears in the following Collection(s)

Show simple item record