Interglacials of the last 800,000 years

Interglacials, including the present (Holocene) period, are warm, low land ice extent (high sea level), end-members of glacial cycles. Based on a sea level definition, we identify eleven interglacials in the last 800,000 years, a result that is robust to alternative definitions. Data compilations su...

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Detalles Bibliográficos
Autores: Berger, B., Grimalt, Joan O., Martrat, Belen, Vázquez Riveiros, Natalia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/168880
Acceso en línea:http://hdl.handle.net/10261/168880
Access Level:acceso abierto
Palabra clave:Interglacials
Quaternary
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spelling Interglacials of the last 800,000 yearsBerger, B.Grimalt, Joan O.Martrat, BelenVázquez Riveiros, NataliaInterglacialsQuaternaryInterglacials, including the present (Holocene) period, are warm, low land ice extent (high sea level), end-members of glacial cycles. Based on a sea level definition, we identify eleven interglacials in the last 800,000 years, a result that is robust to alternative definitions. Data compilations suggest that despite spatial heterogeneity, Marine Isotope Stages (MIS) 5e (last interglacial) and 11c (∼400 ka ago) were globally strong (warm), while MIS 13a (∼500 ka ago) was cool at many locations. A step change in strength of interglacials at 450 ka is apparent only in atmospheric CO2 and in Antarctic and deep ocean temperature. The onset of an interglacial (glacial termination) seems to require a reducing precession parameter (increasing Northern Hemisphere summer insolation), but this condition alone is insufficient. Terminations involve rapid, nonlinear, reactions of ice volume, CO2, and temperature to external astronomical forcing. The precise timing of events may be modulated by millennial-scale climate change that can lead to a contrasting timing of maximum interglacial intensity in each hemisphere. A variety of temporal trends is observed, such that maxima in the main records are observed either early or late in different interglacials. The end of an interglacial (glacial inception) is a slower process involving a global sequence of changes. Interglacials have been typically 10-30 ka long. The combination of minimal reduction in northern summer insolation over the next few orbital cycles, owing to low eccentricity, and high atmospheric greenhouse gas concentrations implies that the next glacial inception is many tens of millennia in the future. ©2015. The Authors.This paper arose as a result of a succession of workshops of the Past Interglacials Group (PIGS), sponsored by the Past Global Changes Project (PAGES). The authors acknowledge the contributions of all participants at those workshops, of whom the listed authors are only a subset. Numerous funding agencies have contributed to the work of this paper including NSF (USA), NERC and The Royal Society (UK), F.R.S-FNRS (Belgium), and SNF (Switzerland).Peer reviewedWiley-BlackwellConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/168880reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1002/2015RG000482Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1688802026-05-22T06:33:51Z
dc.title.none.fl_str_mv Interglacials of the last 800,000 years
title Interglacials of the last 800,000 years
spellingShingle Interglacials of the last 800,000 years
Berger, B.
Interglacials
Quaternary
title_short Interglacials of the last 800,000 years
title_full Interglacials of the last 800,000 years
title_fullStr Interglacials of the last 800,000 years
title_full_unstemmed Interglacials of the last 800,000 years
title_sort Interglacials of the last 800,000 years
dc.creator.none.fl_str_mv Berger, B.
Grimalt, Joan O.
Martrat, Belen
Vázquez Riveiros, Natalia
author Berger, B.
author_facet Berger, B.
Grimalt, Joan O.
Martrat, Belen
Vázquez Riveiros, Natalia
author_role author
author2 Grimalt, Joan O.
Martrat, Belen
Vázquez Riveiros, Natalia
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Interglacials
Quaternary
topic Interglacials
Quaternary
description Interglacials, including the present (Holocene) period, are warm, low land ice extent (high sea level), end-members of glacial cycles. Based on a sea level definition, we identify eleven interglacials in the last 800,000 years, a result that is robust to alternative definitions. Data compilations suggest that despite spatial heterogeneity, Marine Isotope Stages (MIS) 5e (last interglacial) and 11c (∼400 ka ago) were globally strong (warm), while MIS 13a (∼500 ka ago) was cool at many locations. A step change in strength of interglacials at 450 ka is apparent only in atmospheric CO2 and in Antarctic and deep ocean temperature. The onset of an interglacial (glacial termination) seems to require a reducing precession parameter (increasing Northern Hemisphere summer insolation), but this condition alone is insufficient. Terminations involve rapid, nonlinear, reactions of ice volume, CO2, and temperature to external astronomical forcing. The precise timing of events may be modulated by millennial-scale climate change that can lead to a contrasting timing of maximum interglacial intensity in each hemisphere. A variety of temporal trends is observed, such that maxima in the main records are observed either early or late in different interglacials. The end of an interglacial (glacial inception) is a slower process involving a global sequence of changes. Interglacials have been typically 10-30 ka long. The combination of minimal reduction in northern summer insolation over the next few orbital cycles, owing to low eccentricity, and high atmospheric greenhouse gas concentrations implies that the next glacial inception is many tens of millennia in the future. ©2015. The Authors.
publishDate 2016
dc.date.none.fl_str_mv 2016
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
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format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/168880
url http://hdl.handle.net/10261/168880
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1002/2015RG000482
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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