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Article: Patterns and mechanisms of early Pliocene warmth

TitlePatterns and mechanisms of early Pliocene warmth
Authors
Issue Date2013
PublisherNature Publishing Group. The Journal's web site is located at http://www.nature.com/nature
Citation
Nature, 2013, v. 496 n. 7443, p. 43-49 How to Cite?
AbstractAbout five to four million years ago, in the early Pliocene epoch, Earth had a warm, temperate climate. The gradual cooling that followed led to the establishment of modern temperature patterns, possibly in response to a decrease in atmospheric CO 2 concentration, of the order of 100 parts per million, towards preindustrial values. Here we synthesize the available geochemical proxy records of sea surface temperature and show that, compared with that of today, the early Pliocene climate had substantially lower meridional and zonal temperature gradients but similar maximum ocean temperatures. Using an Earth system model, we show that none of the mechanisms currently proposed to explain Pliocene warmth can simultaneously reproduce all three crucial features. We suggest that a combination of several dynamical feedbacks underestimated in the models at present, such as those related to ocean mixing and cloud albedo, may have been responsible for these climate conditions. © 2013 Macmillan Publishers Limited. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/184316
ISSN
2015 Impact Factor: 38.138
2015 SCImago Journal Rankings: 21.936
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFedorov, AVen_US
dc.contributor.authorBrierley, CMen_US
dc.contributor.authorLawrence, KTen_US
dc.contributor.authorLiu, Zen_US
dc.contributor.authorDekens, PSen_US
dc.contributor.authorRavelo, ACen_US
dc.date.accessioned2013-07-10T06:24:06Z-
dc.date.available2013-07-10T06:24:06Z-
dc.date.issued2013en_US
dc.identifier.citationNature, 2013, v. 496 n. 7443, p. 43-49en_US
dc.identifier.issn0028-0836en_US
dc.identifier.urihttp://hdl.handle.net/10722/184316-
dc.description.abstractAbout five to four million years ago, in the early Pliocene epoch, Earth had a warm, temperate climate. The gradual cooling that followed led to the establishment of modern temperature patterns, possibly in response to a decrease in atmospheric CO 2 concentration, of the order of 100 parts per million, towards preindustrial values. Here we synthesize the available geochemical proxy records of sea surface temperature and show that, compared with that of today, the early Pliocene climate had substantially lower meridional and zonal temperature gradients but similar maximum ocean temperatures. Using an Earth system model, we show that none of the mechanisms currently proposed to explain Pliocene warmth can simultaneously reproduce all three crucial features. We suggest that a combination of several dynamical feedbacks underestimated in the models at present, such as those related to ocean mixing and cloud albedo, may have been responsible for these climate conditions. © 2013 Macmillan Publishers Limited. All rights reserved.en_US
dc.languageengen_US
dc.publisherNature Publishing Group. The Journal's web site is located at http://www.nature.com/natureen_US
dc.relation.ispartofNatureen_US
dc.subject.meshAtmosphere - Chemistryen_US
dc.subject.meshCarbon Dioxide - Analysisen_US
dc.subject.meshClimateen_US
dc.subject.meshClimate Change - History - Statistics & Numerical Dataen_US
dc.subject.meshGeographyen_US
dc.subject.meshGeologic Sediments - Chemistryen_US
dc.subject.meshGlobal Warming - History - Statistics & Numerical Dataen_US
dc.subject.meshHistory, Ancienten_US
dc.subject.meshIce Coveren_US
dc.subject.meshModels, Theoreticalen_US
dc.subject.meshOceans And Seasen_US
dc.subject.meshSeawater - Analysisen_US
dc.subject.meshTemperatureen_US
dc.titlePatterns and mechanisms of early Pliocene warmthen_US
dc.typeArticleen_US
dc.identifier.emailLiu, Z: zhliu@hku.hken_US
dc.identifier.authorityLiu, Z=rp00750en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1038/nature12003en_US
dc.identifier.pmid23552943-
dc.identifier.scopuseid_2-s2.0-84875894500en_US
dc.identifier.hkuros219535-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84875894500&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume496en_US
dc.identifier.issue7443en_US
dc.identifier.spage43en_US
dc.identifier.epage49en_US
dc.identifier.isiWOS:000316993400022-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridFedorov, AV=7402999258en_US
dc.identifier.scopusauthoridBrierley, CM=25635521800en_US
dc.identifier.scopusauthoridLawrence, KT=23469562700en_US
dc.identifier.scopusauthoridLiu, Z=55643944000en_US
dc.identifier.scopusauthoridDekens, PS=12768768800en_US
dc.identifier.scopusauthoridRavelo, AC=7006765934en_US

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