Biogeosciences
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Articles | Volume 13, issue 12
Articles | Volume 13, issue 12
https://doi.org/10.5194/bg-13-3701-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-3701-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 12
Research article
 | 
23 Jun 2016
Research article |  | 23 Jun 2016

Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes

Maribel I. García-Ibáñez, Patricia Zunino, Friederike Fröb, Lidia I. Carracedo, Aida F. Ríos, Herlé Mercier, Are Olsen, and Fiz F. Pérez

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Short summary
We assessed the progressive acidification (pH decrease) of the North Atlantic waters from direct observations between 1991 and 2015. The greatest pH decreases were observed in surface and intermediate waters. We conclude that the observed pH decreases are a consequence of the oceanic uptake of anthropogenic CO2. In addition we find that they have been partially offset by alkalinity increases.
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