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Article: The role of carbon dioxide during the onset of Antarctic glaciation

TitleThe role of carbon dioxide during the onset of Antarctic glaciation
Authors
KeywordsCarbon dioxide
Phosphate
Alkenone
Climate forcing
Glaciation
Issue Date2011
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2011, v. 334 n. 6060, p. 1261-1264 How to Cite?
AbstractEarth's modern climate, characterized by polar ice sheets and large equator-to-pole temperature gradients, is rooted in environmental changes that promoted Antarctic glaciation 33.7 million years ago. Onset of Antarctic glaciation reflects a critical tipping point for Earth's climate and provides a framework for investigating the role of atmospheric carbon dioxide (CO(2)) during major climatic change. Previously published records of alkenone-based CO(2) from high- and low-latitude ocean localities suggested that CO(2) increased during glaciation, in contradiction to theory. Here, we further investigate alkenone records and demonstrate that Antarctic and subantarctic data overestimate atmospheric CO(2) levels, biasing long-term trends. Our results show that CO(2) declined before and during Antarctic glaciation and support a substantial CO(2) decrease as the primary agent forcing Antarctic glaciation, consistent with model-derived CO(2) thresholds.
Persistent Identifierhttp://hdl.handle.net/10722/151348
ISSN
2015 Impact Factor: 34.661
2015 SCImago Journal Rankings: 13.217
ISI Accession Number ID
Funding AgencyGrant Number
Yale University Department of Geology and Geophysics
NSFOCE-0902882
OCE-0902993
EAR-0628358
ATM-0513402
ATM-0927946
ANT-034248
Natural Environment Research CouncilNE/G003270/1
Royal Swedish Academy of SciencesKAW 2009.0287
Funding Information:

This work was supported by a postdoctoral fellowship provided by Yale University Department of Geology and Geophysics, with funding provided by the NSF under awards OCE-0902882, OCE-0902993, EAR-0628358, ATM-0513402, ATM-0927946, and ANT-034248. This is PCCRC publication number 1115. Natural Environment Research Council grant NE/G003270/1 provided funds for the stable isotope analysis of carbonates. J.H. was funded by the Royal Swedish Academy of Sciences (KAW 2009.0287).

References

 

DC FieldValueLanguage
dc.contributor.authorPagani, Men_US
dc.contributor.authorHuber, Men_US
dc.contributor.authorLiu, Zen_US
dc.contributor.authorBohaty, SMen_US
dc.contributor.authorHenderiks, Jen_US
dc.contributor.authorSijp, Wen_US
dc.contributor.authorKrishnan, Sen_US
dc.contributor.authorDeConto, RMen_US
dc.date.accessioned2012-06-26T06:20:55Z-
dc.date.available2012-06-26T06:20:55Z-
dc.date.issued2011en_US
dc.identifier.citationScience, 2011, v. 334 n. 6060, p. 1261-1264en_US
dc.identifier.issn0036-8075en_US
dc.identifier.urihttp://hdl.handle.net/10722/151348-
dc.description.abstractEarth's modern climate, characterized by polar ice sheets and large equator-to-pole temperature gradients, is rooted in environmental changes that promoted Antarctic glaciation 33.7 million years ago. Onset of Antarctic glaciation reflects a critical tipping point for Earth's climate and provides a framework for investigating the role of atmospheric carbon dioxide (CO(2)) during major climatic change. Previously published records of alkenone-based CO(2) from high- and low-latitude ocean localities suggested that CO(2) increased during glaciation, in contradiction to theory. Here, we further investigate alkenone records and demonstrate that Antarctic and subantarctic data overestimate atmospheric CO(2) levels, biasing long-term trends. Our results show that CO(2) declined before and during Antarctic glaciation and support a substantial CO(2) decrease as the primary agent forcing Antarctic glaciation, consistent with model-derived CO(2) thresholds.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.rightsScience. Copyright © American Association for the Advancement of Science.-
dc.subjectCarbon dioxide-
dc.subjectPhosphate-
dc.subjectAlkenone-
dc.subjectClimate forcing-
dc.subjectGlaciation-
dc.titleThe role of carbon dioxide during the onset of Antarctic glaciationen_US
dc.typeArticleen_US
dc.identifier.emailPagani, M: mark.pagani@yale.eduen_US
dc.identifier.emailLiu, Z: zhliu@hku.hk-
dc.identifier.authorityLiu, Z=rp00750en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1126/science.1203909en_US
dc.identifier.pmid22144622-
dc.identifier.scopuseid_2-s2.0-82755192511en_US
dc.identifier.hkuros206855-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-82755192511&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume334en_US
dc.identifier.issue6060en_US
dc.identifier.spage1261en_US
dc.identifier.epage1264en_US
dc.identifier.eissn1095-9203-
dc.identifier.isiWOS:000297553600046-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridDeConto, RM=6602434284en_US
dc.identifier.scopusauthoridKrishnan, S=35339313700en_US
dc.identifier.scopusauthoridSijp, W=6506233769en_US
dc.identifier.scopusauthoridHenderiks, J=6506826355en_US
dc.identifier.scopusauthoridBohaty, SM=6603068604en_US
dc.identifier.scopusauthoridLiu, Z=16177844800en_US
dc.identifier.scopusauthoridHuber, M=7202671706en_US
dc.identifier.scopusauthoridPagani, M=7101857920en_US
dc.identifier.citeulike10444287-

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