Biogeosciences
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Articles | Volume 15, issue 12
Articles | Volume 15, issue 12
https://doi.org/10.5194/bg-15-3659-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-3659-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 12
Research article
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18 Jun 2018
Research article | Highlight paper |  | 18 Jun 2018

Field-warmed soil carbon changes imply high 21st-century modeling uncertainty

Katherine Todd-Brown, Bin Zheng, and Thomas W. Crowther

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Short summary
The temperature sensitivity of soil carbon loss is a critical parameter for projecting future CO2. Isolating soil temperature response in the field is challenging due to difficulties isolating root and microbial respiration. We use a database of direct-warming soil carbon changes to generate a new global temperature sensitivity. Incorporating this into Earth system models reduces projected soil carbon. But it also shows that variation due to this parameter is as high as all other causes.
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