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dc.contributor.authorJohnson, Gregory C.  Concept link
dc.contributor.authorPurkey, Sarah G.  Concept link
dc.contributor.authorToole, John M.  Concept link
dc.date.accessioned2010-05-03T19:59:05Z
dc.date.available2010-05-03T19:59:05Z
dc.date.issued2008-11-19
dc.identifier.citationGeophysical Research Letters 35 (2008): L22601en_US
dc.identifier.urihttps://hdl.handle.net/1912/3376
dc.descriptionAuthor Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 35 (2008): L22601, doi:10.1029/2008GL035619.en_US
dc.description.abstractWe analyze abyssal temperature data in the western North Atlantic Ocean from the 1980s–2000s, showing that reductions in Antarctic Bottom Water (AABW) signatures have reached even that basin. Trans-basin oceanographic sections occupied along 52°W from 1983–2003 and 66°W from 1985–2003 quantify abyssal warming resulting from deepening of the strong thermal boundary between AABW and North Atlantic Deep Water (NADW), hence a local AABW volume reduction. Repeat section data taken from 1981–2004 along 24°N also show a reduced zonal gradient in abyssal temperatures, consistent with decreased northward transport of AABW. The reduction in the Antarctic limb of the MOC within the North Atlantic highlights the global reach of climate variability originating around Antarctica.en_US
dc.description.sponsorshipNOAA and NSF supported the 2003 U.S. CLIVAR/CO2 Repeat Hydrography Program reoccupations of the 52 W and 66 W sections, led by Chief Scientists John Toole and Terrence Joyce, respectively. The U.K. National Environment Research Council supported the 2004 reoccupation of the 24 N section, led by Chief Scientist Stuart Cunningham. The hard work of all contributing to the collection and processing of data analyzed here is gratefully acknowledged. The NOAA Office of Oceanic and Atmospheric Research and the NOAA Climate Program Office supported the analysis.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2008GL035619
dc.subjectAntarctic bottom wateren_US
dc.subjectMeridional overturning circulationen_US
dc.titleReduced Antarctic meridional overturning circulation reaches the North Atlantic Oceanen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2008GL035619


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