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Millennial‐Scale Climate Variability Potentially Shaped the Early Interglacial Optimum in Southern Europe

2024-10Journal article Open access
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dc.contributor.authorDesprat, Stéphanie
dc.contributor.authorGuillem, Gauthier
dc.contributor.authorSánchez Goñi, Maria Fernanda
dc.contributor.authorRodrigues, Teresa
dc.contributor.authorYin, Qiuzhen
dc.contributor.authorGrimalt, Joan O.
dc.date.accessioned2024-10-24T13:03:04Z
dc.date.available2024-10-24T13:03:04Z
dc.date.issued2024-10
dc.description.abstractThe seasonal and latitudinal distribution of insolation is considered the main factor controlling the magnitude and timing of interglacial periods. However, despite small differences in insolation forcing, vegetation and hydrology in southern Europe during past interglacials are variable and the gradual change in insolation cannot explain the observed short‐lived forest optimum. Here we focus on vegetation and hydroclimatic changes at orbital‐ and suborbital‐scales in southwestern Europe during two past warm interglacial periods with reduced ice‐sheets, namely Marine Isotope Stages (MIS) 9e and 5e. We provide new pollen and sea surface temperatures records for MIS 9e from IODP Site U1385. This pollen record shows a forest expansion in southern Iberia over a 14 ky interval, bracketed by the millennial‐scale cooling events of Termination IV and MIS 9d. Between 334.5 and 332.5 ka, forest expansion reached a maximum, suggesting increased winter moisture during early MIS 9e. Model‐data comparison for MIS 9e and 5e shows that insolation is the main driver of the orbital‐scale vegetation and precipitation changes in Iberia, atmospheric CO<jats:sub>2</jats:sub> forcing playing a secondary role. The high‐frequency component of the MIS 9e and 5e forest timeseries highlights the early interglacial forest and precipitation maxima as prominent suborbital events lasting ∼2 ky. We propose that the primarily insolation‐driven forest and precipitation optima were fostered by the non‐equilibrium conditions generated by the millennial‐scale deglacial variability during the early interglacials. Additionally, the early end of these optima may have been favored by a cooling and drying event that is part of the persistent intra‐interglacial variability.eng
dc.identifier.doi10.1029/2024pa004846
dc.identifier.eissn2572-4525
dc.identifier.issn2572-4517
dc.identifier.urihttp://hdl.handle.net/10400.1/26143
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAmerican Geophysical Union
dc.relationFeatures and lessons from Past Interglacials ? warm periods ? over the last 1.5 Ma
dc.relationAlgarve Centre for Marine Sciences
dc.relationEuropean Multidisciplinary Sea floor and Water Column Observatory - Portugal
dc.relation.ispartofPaleoceanography and Paleoclimatology
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectInterglacials
dc.subjectVegetation
dc.subjectMIS 9e
dc.subjectU-k'(37) SST
dc.subjectPollen
dc.subjectClimate
dc.titleMillennial‐Scale Climate Variability Potentially Shaped the Early Interglacial Optimum in Southern Europe
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleFeatures and lessons from Past Interglacials ? warm periods ? over the last 1.5 Ma
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleEuropean Multidisciplinary Sea floor and Water Column Observatory - Portugal
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTA-GEO%2F29897%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9444 - RNIIIE/PINFRA%2F22157%2F2016/PT
oaire.citation.issue10
oaire.citation.titlePaleoceanography and Paleoclimatology
oaire.citation.volume39
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream9444 - RNIIIE
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameRodrigues
person.givenNameTeresa
person.identifier.ciencia-idEC18-2390-9594
person.identifier.orcid0000-0001-7811-7506
person.identifier.ridG-2912-2013
person.identifier.scopus-author-id7004330274
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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