Model constraints on the anthropogenic carbon budget of the Arctic Ocean

Terhaar, Jens; Orr, James C.; Gehlen, Marion; Ethé, Christian; Bopp, Laurent

doi:https://doi.org/10.5194/bg-16-2343-2019

Articles | Volume 16, issue 11

https://doi.org/10.5194/bg-16-2343-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-2343-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 11

Research article

|

07 Jun 2019

Research article |

| 07 Jun 2019

Model constraints on the anthropogenic carbon budget of the Arctic Ocean

Jens Terhaar, James C. Orr, Marion Gehlen, Christian Ethé, and Laurent Bopp

Supplement

https://doi.org/10.5194/bg-16-2343-2019-supplement

Data sets

L.S. St. Laurent 18SN19940724, AOS94 cruise data from the 1994 cruises, CARINA Data Set, P. Jones, K. Azetsu-Scott, K. Aagaard, E. Carmack, and J. Swift https://doi.org/10.3334/CDIAC/otg.CARINA_18SN19940724

Hydrographic, chemical and carbon dioxide data from R/V Oden cruise 77DN20050819 L. Anderson, T. Tanhua, E. P. Jones, and A. Karlqvist https://doi.org/10.3334/CDIAC/otg.CLIVAR_77DN20050819

Model code and software

Globalizing results from ocean in situ iron fertilization studies O. Aumont, and L. Bopp https://doi.org/10.1029/2005GB002591

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Short summary

A budget of anthropogenic carbon in the Arctic Ocean, the main driver of open-ocean acidification, was constructed for the first time using a high-resolution ocean model. The budget reveals that anthropogenic carbon enters the Arctic Ocean mainly by lateral transport; the air–sea flux plays a minor role. Coarser-resolution versions of the same model, typical of earth system models, store less anthropogenic carbon in the Arctic Ocean and thus underestimate ocean acidification in the Arctic Ocean.