Climate of the Past
Climate of the Past
CP
Articles | Volume 14, issue 10
Articles | Volume 14, issue 10
https://doi.org/10.5194/cp-14-1515-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-14-1515-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 14, issue 10
Research article
 | 
22 Oct 2018
Research article |  | 22 Oct 2018

Reduced carbon cycle resilience across the Palaeocene–Eocene Thermal Maximum

David I. Armstrong McKay and Timothy M. Lenton

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Short summary
This study uses statistical analyses to look for signs of declining resilience (i.e. greater sensitivity to small shocks) in the global carbon cycle and climate system across the Palaeocene–Eocene Thermal Maximum (PETM), a global warming event 56 Myr ago driven by rapid carbon release. Our main finding is that carbon cycle resilience declined in the 1.5 Myr beforehand (a time of significant volcanic emissions), which is consistent with but not proof of a carbon release tipping point at the PETM.
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