Articles | Volume 15, issue 12
Biogeosciences, 15, 3659–3671, 2018
https://doi.org/10.5194/bg-15-3659-2018
Biogeosciences, 15, 3659–3671, 2018
https://doi.org/10.5194/bg-15-3659-2018

Research article 18 Jun 2018

Research article | 18 Jun 2018

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

Katherine Todd-Brown et al.

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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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