Current estimates of K1* and K2* appear inconsistent with measured CO2 system parameters in cold oceanic regions

Sulpis, Olivier; Lauvset, Siv K.; Hagens, Mathilde

doi:https://doi.org/10.5194/os-16-847-2020

Articles | Volume 16, issue 4

https://doi.org/10.5194/os-16-847-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-16-847-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 4

Research article

|

21 Jul 2020

Research article |

| 21 Jul 2020

Current estimates of K₁* and K₂* appear inconsistent with measured CO₂ system parameters in cold oceanic regions

Olivier Sulpis, Siv K. Lauvset, and Mathilde Hagens

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Final revised paper (published on 21 Jul 2020)
Supplement to the final revised paper
Preprint (discussion started on 25 Mar 2020)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Referee comment to: Current estimates of K1* and K2* appear inconsistent with measured CO2 system parameters in cold oceanic regions', Anonymous Referee #1, 18 May 2020
- AC1: 'Responses to Reviewer #1', olivier sulpis, 09 Jun 2020
RC2: 'Review of 'Current estimates of K1* and K2* appear inconsistent with measured CO2 system parameters in cold oceanic regions'', Anonymous Referee #2, 09 Jun 2020
- AC2: 'Responses to Reviewer #2', olivier sulpis, 09 Jun 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Olivier Sulpis on behalf of the Authors (11 Jun 2020) Author's response Manuscript

ED: Publish subject to technical corrections (16 Jun 2020) by Mario Hoppema

AR by Olivier Sulpis on behalf of the Authors (17 Jun 2020) Manuscript

Short summary

As direct measurements of seawater carbonate system variables, such as pH, are difficult to obtain, scientists use equilibrium constants to compute them from known variables. Using a compilation of in situ data, we show that the set of equilibrium constants preferred by the community is not consistent with measurements in cold, polar waters, where human-made ocean acidification is spreading rapidly. Closing knowledge gaps regarding seawater carbon chemistry in polar regions should be a priority.