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dc.contributor.authorSchmittner, Andreas  Concept link
dc.contributor.authorBostock, Helen  Concept link
dc.contributor.authorCartapanis, olivier  Concept link
dc.contributor.authorCurry, William B.  Concept link
dc.contributor.authorFilipsson, Helena L.  Concept link
dc.contributor.authorGalbraith, Eric D.  Concept link
dc.contributor.authorGottschalk, Julia  Concept link
dc.contributor.authorHerguera, Juan Carlos  Concept link
dc.contributor.authorHoogakker, Babette  Concept link
dc.contributor.authorJaccard, Samuel L.  Concept link
dc.contributor.authorLisiecki, Lorraine E.  Concept link
dc.contributor.authorLund, David C.  Concept link
dc.contributor.authorMartínez Méndez, Gema  Concept link
dc.contributor.authorLynch-Stieglitz, Jean  Concept link
dc.contributor.authorMackensen, Andreas  Concept link
dc.contributor.authorMichel, Elisabeth  Concept link
dc.contributor.authorMix, Alan C.  Concept link
dc.contributor.authorOppo, Delia W.  Concept link
dc.contributor.authorPeterson, Carlye D.  Concept link
dc.contributor.authorRepschläger, Janne  Concept link
dc.contributor.authorSikes, Elisabeth L.  Concept link
dc.contributor.authorSpero, Howard J.  Concept link
dc.contributor.authorWaelbroeck, Claire  Concept link
dc.date.accessioned2017-08-08T15:06:50Z
dc.date.issued2017-06-03
dc.identifier.citationPaleoceanography 32 (2017): 512–530en_US
dc.identifier.urihttps://hdl.handle.net/1912/9158
dc.descriptionAuthor Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 32 (2017): 512–530, doi:10.1002/2016PA003072.en_US
dc.description.abstractThe carbon isotope composition (δ13C) of seawater provides valuable insight on ocean circulation, air-sea exchange, the biological pump, and the global carbon cycle and is reflected by the δ13C of foraminifera tests. Here more than 1700 δ13C observations of the benthic foraminifera genus Cibicides from late Holocene sediments (δ13CCibnat) are compiled and compared with newly updated estimates of the natural (preindustrial) water column δ13C of dissolved inorganic carbon (δ13CDICnat) as part of the international Ocean Circulation and Carbon Cycling (OC3) project. Using selection criteria based on the spatial distance between samples, we find high correlation between δ13CCibnat and δ13CDICnat, confirming earlier work. Regression analyses indicate significant carbonate ion (−2.6 ± 0.4) × 10−3‰/(μmol kg−1) [CO32−] and pressure (−4.9 ± 1.7) × 10−5‰ m−1 (depth) effects, which we use to propose a new global calibration for predicting δ13CDICnat from δ13CCibnat. This calibration is shown to remove some systematic regional biases and decrease errors compared with the one-to-one relationship (δ13CDICnat = δ13CCibnat). However, these effects and the error reductions are relatively small, which suggests that most conclusions from previous studies using a one-to-one relationship remain robust. The remaining standard error of the regression is generally σ ≅ 0.25‰, with larger values found in the southeast Atlantic and Antarctic (σ ≅ 0.4‰) and for species other than Cibicides wuellerstorfi. Discussion of species effects and possible sources of the remaining errors may aid future attempts to improve the use of the benthic δ13C record.en_US
dc.description.sponsorshipU.S. National Science Foundation Grant Numbers: 1634719, 0926735, 1125181; Swiss National Science Foundation Grant Numbers: PP00P2_144811, 200021_163003; Canadian Institute for Advanced Research (CIFAR); Canadian Foundation for Innovation (CFI); Natural Sciences and Engineering Research Council (NSERC)en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2016PA003072
dc.subjectCarbonen_US
dc.subjectIsotopesen_US
dc.subjectBenthicen_US
dc.subjectForaminiferaen_US
dc.subjectCalibrationen_US
dc.titleCalibration of the carbon isotope composition (δ13C) of benthic foraminiferaen_US
dc.typeArticleen_US
dc.description.embargo2017-12-03en_US
dc.identifier.doi10.1002/2016PA003072
dc.embargo.liftdate2017-12-03


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