IntCal09 and Marine09 Radiocarbon Age Calibration Curves, 0–50,000 Years cal BP

Abstract

The IntCal04 and Marine04 radiocarbon calibration curves have been updated from 12 cal kBP (cal kBP is here defined as thousands of calibrated years before AD 1950), and extended to 50 cal kBP, utilizing newly available data sets that meet the IntCal Working Group criteria for pristine corals and other carbonates and for quantification of uncertainty in both the 14 C and calendar timescales as established in 2002. No change was made to the curves from 0–12 cal kBP. The curves were constructed using a Markov chain Monte Carlo (MCMC) implementation of the random walk model used for IntCal04 and Marine04. The new curves were ratified at the 20th International Radiocarbon Conference in June 2009 and are available in the Supplemental Material at www.radiocarbon.org .

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Affiliated Institutions

• Swiss Federal Institute for Forest, Snow and Landscape Research CH
• University of Zurich CH
• Max Planck Institute for Evolutionary Anthropology DE
• University of Exeter GB
• Oxford Archaeology GB
• University of Groningen NL
• Leiden University NL
• Collège de France FR
• University of Bristol GB
• Centre National de la Recherche Scientifique FR
• University of California, Irvine US
• English Heritage GB
• University of Arizona US
• University of Minnesota US
• University of California, Santa Cruz US
• Christian-Albrechts-Universität zu Kiel DE
• Lawrence Livermore National Laboratory US
• Institut de Recherche pour le Développement FR
• Centre de Recherche et d’Enseignement de Géosciences de l’Environnement FR
• ETH Zurich CH
• University of Waikato NZ
• Queen's University Belfast GB
• Woods Hole Oceanographic Institution US
• Cornell University US
• Syracuse University US
• University of Sheffield GB
• Heidelberg Academy of Sciences and Humanities DE

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