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Volume 12, issue 20
Biogeosciences, 12, 6017–6031, 2015
https://doi.org/10.5194/bg-12-6017-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 12, 6017–6031, 2015
https://doi.org/10.5194/bg-12-6017-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 22 Oct 2015

Research article | 22 Oct 2015

Quantifying the influence of CO2 seasonality on future aragonite undersaturation onset

T. P. Sasse et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (09 Sep 2015) by Jack Middelburg
AR by Svenja Lange on behalf of the Authors (21 Sep 2015)  Author's response
ED: Publish as is (02 Oct 2015) by Jack Middelburg
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Short summary
Our results show that accounting for oceanic CO2 seasonality is crucial to projecting the future onset of critical ocean acidification levels (i.e. aragonite undersaturation). In particular, seasonality will bring forward the initial onset of month-long undersaturation by a global average of 17 years. Importantly, widespread undersaturation is projected to occur once atmospheric CO2 reaches 496ppm in the North Pacific and 511ppm in the Southern Ocean, independent of emissions scenario.
Our results show that accounting for oceanic CO2 seasonality is crucial to projecting the future...
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