Climate of the Past
Climate of the Past
CP
Articles | Volume 17, issue 4
Articles | Volume 17, issue 4
https://doi.org/10.5194/cp-17-1507-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-17-1507-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 4
Research article
 | 
19 Jul 2021
Research article |  | 19 Jul 2021

The atmospheric bridge communicated the δ13C decline during the last deglaciation to the global upper ocean

Jun Shao, Lowell D. Stott, Laurie Menviel, Andy Ridgwell, Malin Ödalen, and Mayhar Mohtadi

Supplement

https://doi.org/10.5194/cp-17-1507-2021-supplement

Data sets

NOAA/WDS Paleoclimatology – West Pacific GeoB17402-2 18,000 Year Foraminifera Stable Isotope Data Jun Shao, Lowell D. Stott, Laurie Menviel, Andy Ridgwell, Malin Ödalen, and Mayhar Mohtadi https://doi.org/10.25921/3S96-9C26

Model code and software

derpycode/cgenie.muffin: Shao et al. [revised for CP] Andy Ridgwell, Chris Reinhard, Sebastiaan van de Velde, Markus Adloff, Fanny Monteiro, Dominik Hülse, Jamie Wilson, Ben Ward, Pam Vervoort, Sandra Kirtland Turner, and Mingsong Li https://doi.org/10.5281/zenodo.4903423

derpycode/muffindoc: Andy Ridgwell, Dominik Hülse, Carlye Peterson, Ben Ward, sjszas, evansmn, and Rhi Jones https://doi.org/10.5281/zenodo.4903426

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Short summary
Planktic and shallow benthic foraminiferal stable carbon isotope (δ13C) data show a rapid decline during the last deglaciation. This widespread signal was linked to respired carbon released from the deep ocean and its transport through the upper-ocean circulation. Using numerical simulations in which a stronger flux of respired carbon upwells and outcrops in the Southern Ocean, we find that the depleted δ13C signal is transmitted to the rest of the upper ocean through air–sea gas exchange.
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