Climate of the Past
Climate of the Past
CP
Articles | Volume 15, issue 3
Articles | Volume 15, issue 3
https://doi.org/10.5194/cp-15-1063-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-15-1063-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 3
Research article
 | 
19 Jun 2019
Research article |  | 19 Jun 2019

Evidence for fire in the Pliocene Arctic in response to amplified temperature

Tamara L. Fletcher, Lisa Warden, Jaap S. Sinninghe Damsté, Kendrick J. Brown, Natalia Rybczynski, John C. Gosse, and Ashley P. Ballantyne

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Short summary
The last time atmospheric CO2 was similar to the present was 3–4 million years ago. The Arctic was warmer compared to the global average, and the causes are not fully known. To investigate this, we reconstructed summer temperature, forest fire and vegetation at a 3.9 Ma fen peat in Arctic Canada. The summer temperatures averaged 15.4 °C, and charcoal was abundant. Interactions between vegetation and climate were mediated by fire and may contribute to high Arctic temperatures during the Pliocene.
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