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Evaluating model outputs using integrated global speleothem records of climate change since the last glacial

2019-08Journal article Open access
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dc.contributor.authorComas-Bru, Laia
dc.contributor.authorHarrison, Sandy P.
dc.contributor.authorWerner, Martin
dc.contributor.authorRehfeld, Kira
dc.contributor.authorScroxton, Nick
dc.contributor.authorC. Veiga-Pires, C.
dc.contributor.authorAhmad, Syed Masood
dc.contributor.authorBrahim, Yassine Ait
dc.contributor.authorMozhdehi, Sahar Amirnezhad
dc.contributor.authorArienzo, Monica
dc.contributor.authorAtsawawaranunt, Kamolphat
dc.contributor.authorBaker, Andy
dc.contributor.authorBraun, Kerstin
dc.contributor.authorBreitenbach, Sebastian
dc.contributor.authorBurstyn, Yuval
dc.contributor.authorChawchai, Sakonvan
dc.contributor.authorColumbu, Andrea
dc.contributor.authorDeininger, Michael
dc.contributor.authorDemeny, Attila
dc.contributor.authorDixon, Bronwyn
dc.contributor.authorHatvani, István Gábor
dc.contributor.authorHu, Jun
dc.contributor.authorKaushal, Nikita
dc.contributor.authorKern, Zoltan
dc.contributor.authorLabuhn, Inga
dc.contributor.authorLachniet, Matthew S.
dc.contributor.authorLechleitner, Franziska A.
dc.contributor.authorLorrey, Andrew
dc.contributor.authorMarkowska, Monika
dc.contributor.authorNehme, Carole
dc.contributor.authorNovello, Valdir F.
dc.contributor.authorOster, Jessica
dc.contributor.authorPerez-Mejias, Carlos
dc.contributor.authorPickering, Robyn
dc.contributor.authorSekhon, Natasha
dc.contributor.authorWang, Xianfeng
dc.contributor.authorWarken, Sophie
dc.contributor.authorAtkinson, Tim
dc.contributor.authorAyalon, Avner
dc.contributor.authorBaldini, James
dc.contributor.authorBar-Matthews, Miryam
dc.contributor.authorBernal, Juan Pablo
dc.contributor.authorBoch, Ronny
dc.contributor.authorBorsato, Andrea
dc.contributor.authorBoyd, Meighan
dc.contributor.authorBrierley, Chris
dc.contributor.authorCai, Yanjun
dc.contributor.authorCarolin, Stacy
dc.contributor.authorCheng, Hai
dc.contributor.authorConstantin, Silviu
dc.contributor.authorCouchoud, Isabelle
dc.contributor.authorCruz, Francisco
dc.contributor.authorDenniston, Rhawn
dc.contributor.authorDragusin, Virgil
dc.contributor.authorDuan, Wuhui
dc.contributor.authorErsek, Vasile
dc.contributor.authorFinne, Martin
dc.contributor.authorFleitmann, Dominik
dc.contributor.authorFohlmeister, Jens
dc.contributor.authorFrappier, Amy
dc.contributor.authorGenty, Dominique
dc.contributor.authorHolzkamper, Steffen
dc.contributor.authorHopley, Philip
dc.contributor.authorJohnston, Vanessa
dc.contributor.authorKathayat, Gayatri
dc.contributor.authorKeenan-Jones, Duncan
dc.contributor.authorKoltai, Gabriella
dc.contributor.authorLi, Ting-Yong
dc.contributor.authorLone, Mahjoor Ahmad
dc.contributor.authorLuetscher, Marc
dc.contributor.authorMattey, Dave
dc.contributor.authorMoreno, Ana
dc.contributor.authorMoseley, Gina
dc.contributor.authorPsomiadis, David
dc.contributor.authorRuan, Jiaoyang
dc.contributor.authorScholz, Denis
dc.contributor.authorSha, Lijuan
dc.contributor.authorSmith, Andrew Christopher
dc.contributor.authorStrikis, Nicolas
dc.contributor.authorTreble, Pauline
dc.contributor.authorUnal-Imer, Ezgi
dc.contributor.authorVaks, Anton
dc.contributor.authorVansteenberge, Stef
dc.contributor.authorVoarintsoa, Ny Riavo G.
dc.contributor.authorWong, Corinne
dc.contributor.authorWortham, Barbara
dc.contributor.authorWurtzel, Jennifer
dc.contributor.authorZhang, Haiwei
dc.date.accessioned2019-08-29T13:41:16Z
dc.date.available2019-08-29T13:41:16Z
dc.date.issued2019-08
dc.description.abstractAlthough quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulations in the framework of the Coupled Model Intercomparison Project Phase 6, so it is timely to evaluate different approaches to using the speleothem data for data-model comparisons. Here, we illustrate this using 456 globally distributed speleothem delta O-18 records from an updated version of the Speleothem Isotopes Synthesis and Analysis (SISAL) database and palaeoclimate simulations generated using the ECHAM5-wiso isotope-enabled atmospheric circulation model. We show that the SISAL records reproduce the first-order spatial patterns of isotopic variability in the modern day, strongly supporting the application of this dataset for evaluating model-derived isotope variability into the past. However, the discontinuous nature of many speleothem records complicates the process of procuring large numbers of records if data-model comparisons are made using the traditional approach of comparing anomalies between a control period and a given palaeoclimate experiment. To circumvent this issue, we illustrate techniques through which the absolute isotope values during any time period could be used for model evaluation. Specifically, we show that speleothem isotope records allow an assessment of a model's ability to simulate spatial isotopic trends. Our analyses provide a protocol for using speleothem isotope data for model evaluation, including screening the observations to take into account the impact of speleothem mineralogy on delta O-18 values, the optimum period for the modern observational baseline and the selection of an appropriate time window for creating means of the isotope data for palaeo-time-slices.pt_PT
dc.description.sponsorshipEuropean Geosciences Union - W2017/413; Irish Centre for Research in Applied Geosciences (iCRAG); European Association of Geochemistry (Early Career Ambassadors program 2017); Quaternary Research Association UK; Navarino Environmental Observatory, Stockholm University; University College Dublin, Savillex (UK) - SF1428; Ibn Zohr University, Morocco; University of Reading; European Research Council - 694481; Natural Environment Research Council (JPI-Belmont project "PAleao-Constraints on Monsoon Evolution and Dynamics (PACMEDY)"); Geological Survey Ireland - 2017-SC-056; Royal Irish Academy; Deutsche Forschungsgemeinschaft - RE3994/2-1; Past Global Changes (PAGES) programme;pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.5194/cp-15-1557-2019
dc.identifier.urihttp://hdl.handle.net/10400.1/12745
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCopernicus Publicationspt_PT
dc.subjectStable-isotope variationspt_PT
dc.subjectGrowth frequency variationspt_PT
dc.subjectGeneral-circulation modelpt_PT
dc.subjectDelta-O-18 water isotopept_PT
dc.subjectHigh-resolutionpt_PT
dc.subjectOxygen-isotopept_PT
dc.subjectAsian Monsoonpt_PT
dc.subjectAtmospheric circulationpt_PT
dc.subjectNorth-Atlanticpt_PT
dc.subjectPMIP4 contributionpt_PT
dc.titleEvaluating model outputs using integrated global speleothem records of climate change since the last glacialpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMAR%2F00350%2F2013/PT
oaire.citation.endPage1579pt_PT
oaire.citation.startPage1557pt_PT
oaire.citation.titleClimate of the Pastpt_PT
oaire.citation.volume15pt_PT
oaire.fundingStream5876
person.familyNameVeiga-Pires
person.givenNameCristina
person.identifier113325
person.identifier.ciencia-id4A1F-CEDA-E66C
person.identifier.orcid0000-0002-9323-0723
person.identifier.ridB-5144-2008
person.identifier.scopus-author-id7801372905
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd1541efa-0eaa-48dc-aea3-a1e64aa0065a
relation.isAuthorOfPublication.latestForDiscoveryd1541efa-0eaa-48dc-aea3-a1e64aa0065a
relation.isProjectOfPublication3c9090f1-c8fc-4990-8cd8-d61d72eb13f7
relation.isProjectOfPublication.latestForDiscovery3c9090f1-c8fc-4990-8cd8-d61d72eb13f7

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