Articles | Volume 15, issue 18
https://doi.org/10.5194/bg-15-5677-2018
https://doi.org/10.5194/bg-15-5677-2018
Research article
 | 
24 Sep 2018
Research article |  | 24 Sep 2018

Controls of terrestrial ecosystem nitrogen loss on simulated productivity responses to elevated CO2

Johannes Meyerholt and Sönke Zaehle

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Cited articles

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Short summary
Terrestrial biosphere models employ various representations of ecosystem nitrogen loss, some based on soil N availability, some based on net N mineralization. We show in local and global simulations that this variety leads to pronounced uncertainty in the predicted magnitude and sign of ecosystem N loss change under elevated CO2. Suprisingly, this uncertainty barely affects predicted carbon storage responses to elevated CO2, illustrating the need for new benchmarks especially in the boreal zone.
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