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Article: Tropical ocean temperatures over the past 3.5 million years

TitleTropical ocean temperatures over the past 3.5 million years
Authors
Issue Date2010
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2010, v. 328 n. 5985, p. 1530-1534 How to Cite?
AbstractDetermining the timing and amplitude of tropical sea surface temperature (SST) change is an important part of solving the puzzle of the Plio-Pleistocene ice ages. Alkenone-based tropical SST records from the major ocean basins show coherent glacial-interglacial temperature changes of 1° to 3°C that align with (but slightly lead) global changes in ice volume and deep ocean temperature over the past 3.5 million years. Tropical temperatures became tightly coupled with benthic δ18O and orbital forcing after 2.7 million years. We interpret the similarity of tropical SST changes, in dynamically dissimilar regions, to reflect "top-down" forcing through the atmosphere. The inception of a strong carbon dioxide-greenhouse gas feedback and amplification of orbital forcing at ∼2.7 million years ago connected the fate of Northern Hemisphere ice sheets with global ocean temperatures since that time. Copyright Science 2010 by the American Association for the Advancement of Science; all rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151305
ISSN
2015 Impact Factor: 34.661
2015 SCImago Journal Rankings: 13.217
ISI Accession Number ID
Funding AgencyGrant Number
National Science Foundation (NSF)OCE9986760
OCE-0351599
OCE0623487
OCE0623310
Evolving Earth Foundation
Japan's Ministry of Education, Culture, Sports, Science and Technology
European Consortium for Ocean Drilling Research
People's Republic of China, Ministry of Science and Technology
Funding Information:

This research was supported by National Science Foundation (NSF) grants OCE9986760 and OCE-0351599 to T. D. H. and OCE0623487 and OCE0623310 to T. D. H. and K. T. L. and by grants from the Evolving Earth Foundation to K. T. L. This research used samples provided by ODP and the Integrated Ocean Drilling Program (IODP). ODP was sponsored by NSF and participating countries under the management of Joint Oceanographic Institutions. IODP is supported by NSF; Japan's Ministry of Education, Culture, Sports, Science and Technology; the European Consortium for Ocean Drilling Research; and the People's Republic of China, Ministry of Science and Technology.

References

 

DC FieldValueLanguage
dc.contributor.authorHerbert, TDen_US
dc.contributor.authorPeterson, LCen_US
dc.contributor.authorLawrence, KTen_US
dc.contributor.authorLiu, Zen_US
dc.date.accessioned2012-06-26T06:20:21Z-
dc.date.available2012-06-26T06:20:21Z-
dc.date.issued2010en_US
dc.identifier.citationScience, 2010, v. 328 n. 5985, p. 1530-1534en_US
dc.identifier.issn0036-8075en_US
dc.identifier.urihttp://hdl.handle.net/10722/151305-
dc.description.abstractDetermining the timing and amplitude of tropical sea surface temperature (SST) change is an important part of solving the puzzle of the Plio-Pleistocene ice ages. Alkenone-based tropical SST records from the major ocean basins show coherent glacial-interglacial temperature changes of 1° to 3°C that align with (but slightly lead) global changes in ice volume and deep ocean temperature over the past 3.5 million years. Tropical temperatures became tightly coupled with benthic δ18O and orbital forcing after 2.7 million years. We interpret the similarity of tropical SST changes, in dynamically dissimilar regions, to reflect "top-down" forcing through the atmosphere. The inception of a strong carbon dioxide-greenhouse gas feedback and amplification of orbital forcing at ∼2.7 million years ago connected the fate of Northern Hemisphere ice sheets with global ocean temperatures since that time. Copyright Science 2010 by the American Association for the Advancement of Science; all rights reserved.en_US
dc.languageengen_US
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.orgen_US
dc.relation.ispartofScienceen_US
dc.titleTropical ocean temperatures over the past 3.5 million yearsen_US
dc.typeArticleen_US
dc.identifier.emailLiu, Z:zhliu@hku.hken_US
dc.identifier.authorityLiu, Z=rp00750en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.doi10.1126/science.1185435en_US
dc.identifier.pmid20558711-
dc.identifier.scopuseid_2-s2.0-77953791189en_US
dc.identifier.hkuros175748-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77953791189&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume328en_US
dc.identifier.issue5985en_US
dc.identifier.spage1530en_US
dc.identifier.epage1534en_US
dc.identifier.isiWOS:000278859200039-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridHerbert, TD=7005866440en_US
dc.identifier.scopusauthoridPeterson, LC=36438644200en_US
dc.identifier.scopusauthoridLawrence, KT=23469562700en_US
dc.identifier.scopusauthoridLiu, Z=16177844800en_US

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