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Monsoon-driven Saharan dust variability over the past 240,000 years

dc.rights.licenseopenen_US
hal.structure.identifierGéosciences Paris Sud [GEOPS]
hal.structure.identifierDepartment of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge] [EAPS]
dc.contributor.authorSKONIECZNY, C.
hal.structure.identifierMassachusetts Institute of Technology [MIT]
dc.contributor.authorMCGEE, D.
hal.structure.identifierLamont-Doherty Earth Observatory [LDEO]
hal.structure.identifierDepartment of Earth and Environmental Sciences, Columbia University
dc.contributor.authorWINCKLER, G.
hal.structure.identifierDepartment of Environmental Studies [Saint-Paul]
dc.contributor.authorL.I., Bradtmiller
hal.structure.identifierDepartment of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge] [EAPS]
dc.contributor.authorC.W., Kinsley
hal.structure.identifierColumbia University [New York]
dc.contributor.authorP.J., Polissar
hal.structure.identifierDepartamento de Oceanografía [Concepción]
dc.contributor.authorDE POL-HOLZ, Ricardo
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorROSSIGNOL, Linda
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMALAIZE, Bruno
dc.date.accessioned2024-02-29T14:03:42Z
dc.date.available2024-02-29T14:03:42Z
dc.date.issued2019
dc.identifier.issn2375-2548en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188510
dc.description.abstractEnReconstructions of past Saharan dust deposition in marine sediments provide foundational records of North African climate over time scales of 10(3) to 10(6) years. Previous dust records show primarily glacial-interglacial variability in the Pleistocene, in contrast to other monsoon records showing strong precessional variability. Here, we present the first Saharan dust record spanning multiple glacial cycles obtained using Th-230 normalization, an improved method of calculating fluxes. Contrary to previous data, our record from the West African margin demonstrates high correlation with summer insolation and limited glacial-interglacial changes, indicating coherent variability in the African monsoon belt throughout the late Pleistocene. Our results demonstrate that low-latitude Saharan dust emissions do not vary synchronously with high-and mid-latitude dust emissions, and they call into question the use of existing Plio-Pleistocene dust records to investigate links between climate and hominid evolution.
dc.language.isoENen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.title.enMonsoon-driven Saharan dust variability over the past 240,000 years
dc.typeArticle de revueen_US
dc.identifier.doi10.1126/sciadv.aav1887en_US
dc.subject.halPlanète et Univers [physics]en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terreen_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalScience Advancesen_US
bordeaux.pageeaav1887en_US
bordeaux.volume5en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue1en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-01971717
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Science%20Advances&rft.date=2019&rft.volume=5&rft.issue=1&rft.spage=eaav1887&rft.epage=eaav1887&rft.eissn=2375-2548&rft.issn=2375-2548&rft.au=SKONIECZNY,%20C.&MCGEE,%20D.&WINCKLER,%20G.&L.I.,%20Bradtmiller&C.W.,%20Kinsley&rft.genre=article


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