Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial

Considerable ambiguity remains over the extent and nature of millennial/centennial-scale climate instability during the Last Interglacial (LIG). Here we analyse marine and terrestrial proxies from a deep-sea sediment sequence on the Portuguese Margin and combine results with an intensively dated Ita...

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Autores: Tzedakis, P. C., Drysdale, Russell N., Margari, Vasiliki, Skinner, Luke C., Menviel, Laurie, Rhodes, Rachael H., Taschetto, Andréa Sardinha, Hodell, David A., Crowhurst, Simon J., Hellstrom, John C., Fallick, Anthony Edward, Grimalt, Joan O., McManus, Jerry F., Martrat, Belen, Mokeddem, Zohra, Parrenin, Frédéric, Regattieri, Eleonora, Roe, K., Zanchetta, Giovanni
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/172977
Acceso en línea:http://hdl.handle.net/10261/172977
Access Level:acceso abierto
Palabra clave:Last interglacial
Interglacial
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spelling Enhanced climate instability in the North Atlantic and southern Europe during the Last InterglacialTzedakis, P. C.Drysdale, Russell N.Margari, VasilikiSkinner, Luke C.Menviel, LaurieRhodes, Rachael H.Taschetto, Andréa SardinhaHodell, David A.Crowhurst, Simon J.Hellstrom, John C.Fallick, Anthony EdwardGrimalt, Joan O.McManus, Jerry F.Martrat, BelenMokeddem, ZohraParrenin, FrédéricRegattieri, EleonoraRoe, K.Zanchetta, GiovanniLast interglacialInterglacialConsiderable ambiguity remains over the extent and nature of millennial/centennial-scale climate instability during the Last Interglacial (LIG). Here we analyse marine and terrestrial proxies from a deep-sea sediment sequence on the Portuguese Margin and combine results with an intensively dated Italian speleothem record and climate-model experiments. The strongest expression of climate variability occurred during the transitions into and out of the LIG. Our records also document a series of multi-centennial intra-interglacial arid events in southern Europe, coherent with cold water-mass expansions in the North Atlantic. The spatial and temporal fingerprints of these changes indicate a reorganization of ocean surface circulation, consistent with low-intensity disruptions of the Atlantic meridional overturning circulation (AMOC). The amplitude of this LIG variability is greater than that observed in Holocene records. Episodic Greenland ice melt and runoff as a result of excess warmth may have contributed to AMOC weakening and increased climate instability throughout the LIG. © 2018, The Author(s).We thank A. Scrivner and C. Walmsley for assistance with foraminifer sample preparation and J. Rolfe and I. Mather for technical assistance with stable isotope measurements, M. Maslin and D. Thornalley for comments on an earlier version of the manuscript, A. Carlson and E. Galaasen for discussions and E. Galaasen and N. Irvali for providing the MD03-2664 data. V.M., K.R., L.C.S. and P.C.T. acknowledge support for the MD01-2444 study from UK-NERC project NE/G00756X/1 (to P.C.T. and L.C.S.). R.N.D., L.C.S., E.R., G.Z. and P.C.T. acknowledge support from Australian Research Council grant DP160102969 (to R.N.D.). L.M. acknowledges support from the Australian Research Council grant DE150100107. A.S.T. and J.H. are supported by the Australian Research Council (ARC). The numerical experiments were undertaken on the NCI National Facility at the ANU, Australia. B.M. acknowledges support from the CSIC-Ramón y Cajal postdoctoral programme RYC-2013-14073. We wish to acknowledge use of the Ferret program for generating the maps in Fig. 6 and Supplementary Figure 6 in this paper. Ferret is a product of NOAA’s Pacific Marine Environmental Laboratory (information is available at http://ferret.pmel.noaa.gov/Ferret/). This paper is a contribution to the PAGES Working Group on Quaternary Interglacials (QUIGS).Peer reviewedSpringer NatureConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/172977reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1038/s41467-018-06683-3Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1729772026-05-22T06:33:51Z
dc.title.none.fl_str_mv Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
title Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
spellingShingle Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
Tzedakis, P. C.
Last interglacial
Interglacial
title_short Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
title_full Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
title_fullStr Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
title_full_unstemmed Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
title_sort Enhanced climate instability in the North Atlantic and southern Europe during the Last Interglacial
dc.creator.none.fl_str_mv Tzedakis, P. C.
Drysdale, Russell N.
Margari, Vasiliki
Skinner, Luke C.
Menviel, Laurie
Rhodes, Rachael H.
Taschetto, Andréa Sardinha
Hodell, David A.
Crowhurst, Simon J.
Hellstrom, John C.
Fallick, Anthony Edward
Grimalt, Joan O.
McManus, Jerry F.
Martrat, Belen
Mokeddem, Zohra
Parrenin, Frédéric
Regattieri, Eleonora
Roe, K.
Zanchetta, Giovanni
author Tzedakis, P. C.
author_facet Tzedakis, P. C.
Drysdale, Russell N.
Margari, Vasiliki
Skinner, Luke C.
Menviel, Laurie
Rhodes, Rachael H.
Taschetto, Andréa Sardinha
Hodell, David A.
Crowhurst, Simon J.
Hellstrom, John C.
Fallick, Anthony Edward
Grimalt, Joan O.
McManus, Jerry F.
Martrat, Belen
Mokeddem, Zohra
Parrenin, Frédéric
Regattieri, Eleonora
Roe, K.
Zanchetta, Giovanni
author_role author
author2 Drysdale, Russell N.
Margari, Vasiliki
Skinner, Luke C.
Menviel, Laurie
Rhodes, Rachael H.
Taschetto, Andréa Sardinha
Hodell, David A.
Crowhurst, Simon J.
Hellstrom, John C.
Fallick, Anthony Edward
Grimalt, Joan O.
McManus, Jerry F.
Martrat, Belen
Mokeddem, Zohra
Parrenin, Frédéric
Regattieri, Eleonora
Roe, K.
Zanchetta, Giovanni
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Last interglacial
Interglacial
topic Last interglacial
Interglacial
description Considerable ambiguity remains over the extent and nature of millennial/centennial-scale climate instability during the Last Interglacial (LIG). Here we analyse marine and terrestrial proxies from a deep-sea sediment sequence on the Portuguese Margin and combine results with an intensively dated Italian speleothem record and climate-model experiments. The strongest expression of climate variability occurred during the transitions into and out of the LIG. Our records also document a series of multi-centennial intra-interglacial arid events in southern Europe, coherent with cold water-mass expansions in the North Atlantic. The spatial and temporal fingerprints of these changes indicate a reorganization of ocean surface circulation, consistent with low-intensity disruptions of the Atlantic meridional overturning circulation (AMOC). The amplitude of this LIG variability is greater than that observed in Holocene records. Episodic Greenland ice melt and runoff as a result of excess warmth may have contributed to AMOC weakening and increased climate instability throughout the LIG. © 2018, The Author(s).
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/172977
url http://hdl.handle.net/10261/172977
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1038/s41467-018-06683-3
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
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
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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