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The Antarctic Ice Core Chronology 2023 (AICC2023) chronological framework and associated timescale for the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core

dc.rights.licenseopenen_US
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGlaces et Continents, Climats et Isotopes Stables [GLACCIOS]
dc.contributor.authorBOUCHET, Marie
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGlaces et Continents, Climats et Isotopes Stables [GLACCIOS]
dc.contributor.authorLANDAIS, Amaelle
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGlaces et Continents, Climats et Isotopes Stables [GLACCIOS]
dc.contributor.authorGRISART, Antoine
hal.structure.identifierInstitut des Géosciences de l’Environnement [IGE]
dc.contributor.authorPARRENIN, Frédéric
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGlaces et Continents, Climats et Isotopes Stables [GLACCIOS]
dc.contributor.authorPRIÉ, Frédéric
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGlaces et Continents, Climats et Isotopes Stables [GLACCIOS]
dc.contributor.authorJACOB, Roxanne
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierGlaces et Continents, Climats et Isotopes Stables [GLACCIOS]
dc.contributor.authorFOURRÉ, Elise
hal.structure.identifierInstitut des Géosciences de l’Environnement [IGE]
dc.contributor.authorCAPRON, Emilie
hal.structure.identifierInstitut des Géosciences de l’Environnement [IGE]
dc.contributor.authorRAYNAUD, Dominique
hal.structure.identifierArctic and Antarctic Research Institute [AARI]
dc.contributor.authorLIPENKOV, Vladimir
hal.structure.identifierPAGES International Project Office
hal.structure.identifierCentre Georges Lemaître for Earth and Climate Research [Louvain] [TECLIM]
dc.contributor.authorLOUTRE, Marie-France
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorEXTIER, Thomas
hal.structure.identifierNiels Bohr Institute [Copenhagen] [NBI]
dc.contributor.authorSVENSSON, Anders
hal.structure.identifierInstitut des Géosciences de l’Environnement [IGE]
dc.contributor.authorLEGRAIN, Etienne
hal.structure.identifierInstitut des Géosciences de l’Environnement [IGE]
dc.contributor.authorMARTINERIE, Patricia
hal.structure.identifierOeschger Centre for Climate Change Research [OCCR]
dc.contributor.authorLEUENBERGER, Markus
hal.structure.identifierUniversity of Science and Technology of China [Hefei] [USTC]
dc.contributor.authorJIANG, Wei
hal.structure.identifierUniversity of Science and Technology of China [Hefei] [USTC]
dc.contributor.authorRITTERBUSCH, Florian
hal.structure.identifierUniversity of Science and Technology of China [Hefei] [USTC]
dc.contributor.authorLU, Zheng-Tian
hal.structure.identifierUniversity of Science and Technology of China [Hefei] [USTC]
dc.contributor.authorYANG, Guo-Min
dc.date.accessioned2024-02-14T14:22:04Z
dc.date.available2024-02-14T14:22:04Z
dc.date.issued2023-11-10
dc.identifier.issn1814-9324en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188135
dc.description.abstractEnAbstract. The EPICA (European Project for Ice Coring in Antarctica) Dome C (EDC) ice core drilling in East Antarctica reaches a depth of 3260 m. The reference EDC chronology, the AICC2012 (Antarctic Ice Core Chronology 2012), provides an age vs. depth relationship covering the last 800 kyr (thousands of years), with an absolute uncertainty rising up to 8000 years at the bottom of the ice core. The origins of this relatively large uncertainty are twofold: (1) the δ18Oatm, δO2/N2 and total air content (TAC) records are poorly resolved and show large gaps over the last 800 kyr, and (2) large uncertainties are associated with their orbital targets. Here, we present new highly resolved δ18Oatm, δO2/N2 and δ15N measurements for the EDC ice core covering the last five glacial–interglacial transitions; a new low-resolution TAC record over the period 440–800 ka BP (ka: 1000 years before 1950); and novel absolute 81Kr ages. We have compiled chronological and glaciological information including novel orbital age markers from new data on the EDC ice core as well as accurate firn modeling estimates in a Bayesian dating tool to construct the new AICC2023 chronology. For the first time, three orbital tools are used simultaneously. Hence, it is possible to observe that they are consistent with each other and with the other age markers over most of the last 800 kyr (70 %). This, in turn, gives us confidence in the new AICC2023 chronology. The average uncertainty in the ice chronology is reduced from 1700 to 900 years in AICC2023 over the last 800 kyr (1σ). The new timescale diverges from AICC2012 and suggests age shifts reaching 3800 years towards older ages over marine isotope stages (MISs) 5, 11 and 19. But the coherency between the new AICC2023 timescale and independent chronologies of other archives (Italian Lacustrine succession from Sulmona Basin, Dome Fuji ice core and northern Alpine speleothems) is improved by 1000 to 2000 years over these time intervals.
dc.description.sponsorshipCharacterisation & Dynamics of Past Warm Climatesen_US
dc.language.isoENen_US
dc.title.enThe Antarctic Ice Core Chronology 2023 (AICC2023) chronological framework and associated timescale for the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/cp-19-2257-2023en_US
dc.subject.halPlanète et Univers [physics]/Océan, Atmosphèreen_US
dc.subject.halPlanète et Univers [physics]/Interfaces continentales, environnementen_US
bordeaux.journalClimate of the Pasten_US
bordeaux.page2257 - 2286en_US
bordeaux.volume19en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue11en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04282265
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccCC BYen_US
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