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Article: Two centuries of limited variability in subtropical North Atlantic thermocline ventilation

TitleTwo centuries of limited variability in subtropical North Atlantic thermocline ventilation
Authors
Issue Date2012
Citation
Nature Communications, 2012, v. 3 How to Cite?
AbstractVentilation and mixing of oceanic gyres is important to ocean-atmosphere heat and gas transfer, and to mid-latitude nutrient supply. The rates of mode water formation are believed to impact climate and carbon exchange between the surface and mid-depth water over decadal periods. Here, a record of 14 C/ 12 C (1780-1940), which is a proxy for vertical ocean mixing, from an annually banded coral from Bermuda, shows limited inter-annual variability and a substantial Suess Effect (the decrease in 14 C/12 C since 1900). The Sargasso Sea mixing rates between the surface and thermocline varied minimally over the past two centuries, despite changes to mean-hemispheric climate, including the Little Ice Age and variability in the North Atlantic Oscillation. This result indicates that regional formation rates of sub-tropical mode water are stable over decades, and that anthropogenic carbon absorbed by the ocean does not return to the surface at a variable rate. © 2012 Macmillan Publishers Limited. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151373
ISSN
2015 Impact Factor: 11.329
2015 SCImago Journal Rankings: 6.539
ISI Accession Number ID
Funding AgencyGrant Number
NSFOCE - 0526463
0961980
Stephen Hui Trust
Funding Information:

We thank S. Griffin and D. Ostermann for analysis, and the Bermuda Institute of Ocean Science (BIOS) and Anne Cohen for coral collection. W. Curry provided the initial inspiration for this project. R. Toggweiler provided helpful comments. Funding provided by NSF's Chemical Oceanography Program OCE - 0526463 and 0961980 and the Stephen Hui Trust Fund.

References

 

DC FieldValueLanguage
dc.contributor.authorGoodkin, NFen_US
dc.contributor.authorDruffel, ERMen_US
dc.contributor.authorHughen, KAen_US
dc.contributor.authorDoney, SCen_US
dc.date.accessioned2012-06-26T06:21:18Z-
dc.date.available2012-06-26T06:21:18Z-
dc.date.issued2012en_US
dc.identifier.citationNature Communications, 2012, v. 3en_US
dc.identifier.issn2041-1723en_US
dc.identifier.urihttp://hdl.handle.net/10722/151373-
dc.description.abstractVentilation and mixing of oceanic gyres is important to ocean-atmosphere heat and gas transfer, and to mid-latitude nutrient supply. The rates of mode water formation are believed to impact climate and carbon exchange between the surface and mid-depth water over decadal periods. Here, a record of 14 C/ 12 C (1780-1940), which is a proxy for vertical ocean mixing, from an annually banded coral from Bermuda, shows limited inter-annual variability and a substantial Suess Effect (the decrease in 14 C/12 C since 1900). The Sargasso Sea mixing rates between the surface and thermocline varied minimally over the past two centuries, despite changes to mean-hemispheric climate, including the Little Ice Age and variability in the North Atlantic Oscillation. This result indicates that regional formation rates of sub-tropical mode water are stable over decades, and that anthropogenic carbon absorbed by the ocean does not return to the surface at a variable rate. © 2012 Macmillan Publishers Limited. All rights reserved.en_US
dc.languageengen_US
dc.relation.ispartofNature Communicationsen_US
dc.titleTwo centuries of limited variability in subtropical North Atlantic thermocline ventilationen_US
dc.typeArticleen_US
dc.identifier.emailGoodkin, NF:goodkin@hkucc.hku.hken_US
dc.identifier.authorityGoodkin, NF=rp00700en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1038/ncomms1811en_US
dc.identifier.scopuseid_2-s2.0-84860478007en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84860478007&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume3en_US
dc.identifier.isiWOS:000304611400003-
dc.identifier.scopusauthoridGoodkin, NF=12446578100en_US
dc.identifier.scopusauthoridDruffel, ERM=7006170129en_US
dc.identifier.scopusauthoridHughen, KA=6701562711en_US
dc.identifier.scopusauthoridDoney, SC=35498837200en_US

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