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The complexity of millennial-scale variability in southwestern Europe during MIS 11

2016-07Journal article Restricted
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dc.contributor.authorOliveira, Dulce
dc.contributor.authorDesprat, Stephanie
dc.contributor.authorRodrigues, Teresa
dc.contributor.authorNaughton, Filipa
dc.contributor.authorHodell, David
dc.contributor.authorTrigo, Ricardo
dc.contributor.authorRufino, Marta
dc.contributor.authorLopes, Cristina
dc.contributor.authorAbrantes, Fatima
dc.contributor.authorSanchez Goni, Maria Fernanda
dc.date.accessioned2017-04-07T15:55:47Z
dc.date.available2017-04-07T15:55:47Z
dc.date.issued2016-07
dc.description.abstractClimatic variability of Marine Isotope Stage (MIS) 11 is examined using a new high-resolution direct land sea comparison from the SW Iberian margin Site U1385. This study, based on pollen and biomarker analyses, documents regional vegetation, terrestrial climate and sea surface temperature (SST) variability. Suborbital climate variability is revealed by a series of forest decline events suggesting repeated cooling and drying episodes in SW Iberia throughout MIS 11. Only the most severe events on land are coeval with SST decreases, under larger ice volume conditions. Our study shows that the diverse expression (magnitude, character and duration) of the millennial-scale cooling events in SW Europe relies on atmospheric and oceanic processes whose predominant role likely depends on baseline climate states. Repeated atmospheric shifts recalling the positive North Atlantic Oscillation mode, inducing dryness in SW Iberia without systematical SST changes, would prevail during low ice volume conditions. In contrast, disruption of the Atlantic meridional overturning circulation (AMOC), related to iceberg discharges, colder SST and increased hydrological regime, would be responsible for the coldest and driest episodes of prolonged duration in SW Europe. (C) 2016 University of Washington. Published by Elsevier Inc. All rights reserved.
dc.identifier.doi10.1016/j.yqres.2016.09.002
dc.identifier.issn0033-5894
dc.identifier.urihttp://hdl.handle.net/10400.1/9220
dc.language.isoeng
dc.peerreviewedyes
dc.relation.isbasedonWOS:000389869700012
dc.titleThe complexity of millennial-scale variability in southwestern Europe during MIS 11
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAAC-CLI%2F100157%2F2008/PT
oaire.citation.endPage387
oaire.citation.issue3
oaire.citation.startPage373
oaire.citation.titleQuaternary Research
oaire.citation.volume86
oaire.fundingStream5876-PPCDTI
person.familyNameOliveira
person.familyNameRodrigues
person.familyNameNaughton
person.familyNameRufino
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person.givenNameDulce
person.givenNameTeresa
person.givenNameFilipa
person.givenNameMarta
person.givenNameFatima
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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