Climate of the Past
Climate of the Past
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Articles | Volume 22, issue 4
Articles | Volume 22, issue 4
https://doi.org/10.5194/cp-22-729-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-729-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 4
Research article
 | 
10 Apr 2026
Research article |  | 10 Apr 2026

A model intercomparison of radiocarbon-based marine reservoir ages during the last 55 kyr including abrupt changes in the Atlantic Meridional Overturning Circulation

Peter Köhler, Laurie Menviel, Frerk Pöppelmeier, Timothy J. Heaton, Edouard Bard, and Luke C. Skinner

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Short summary
Radiocarbon (14C) is decaying over time, which is used to determine the age of carbon-containing objects. Calibration curves are necessary to come from measured 14C values to calendar ages. We use different models in order to improve future calibration curves, especially around times of abrupt changes in the Atlantic meridional overturning circulation. We find that uncertainties during those times are underrepresented in present calibrations, especially in the Atlantic.
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