Biogeosciences
Biogeosciences
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Articles | Volume 13, issue 5
Articles | Volume 13, issue 5
https://doi.org/10.5194/bg-13-1491-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-1491-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 5
Research article
 | 
10 Mar 2016
Research article |  | 10 Mar 2016

Variability of projected terrestrial biosphere responses to elevated levels of atmospheric CO2 due to uncertainty in biological nitrogen fixation

Johannes Meyerholt, Sönke Zaehle, and Matthew J. Smith

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Short summary
We investigated how today's state-of-the-art terrestrial biosphere models represent biological nitrogen fixation and what the consequences of varying representation are for model predictions under ambient conditions and under scenarios of elevated atmospheric carbon dioxide concentrations. We found that varying global nitrogen fixation rates are simulated under ambient conditions and that the responses of the simulated carbon and nitrogen cycles are significantly affected under perturbation.
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