Arctic Ocean CO2 uptake: an improved multiyear estimate of the air–sea CO2 flux incorporating chlorophyll a concentrations

Yasunaka, Sayaka; Siswanto, Eko; Olsen, Are; Hoppema, Mario; Watanabe, Eiji; Fransson, Agneta; Chierici, Melissa; Murata, Akihiko; Lauvset, Siv K.; Wanninkhof, Rik; Takahashi, Taro; Kosugi, Naohiro; Omar, Abdirahman M.; van Heuven, Steven; Mathis, Jeremy T.

doi:https://doi.org/10.5194/bg-15-1643-2018

Articles | Volume 15, issue 6

https://doi.org/10.5194/bg-15-1643-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-15-1643-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 6

Research article

|

22 Mar 2018

Research article |

| 22 Mar 2018

Arctic Ocean CO₂ uptake: an improved multiyear estimate of the air–sea CO₂ flux incorporating chlorophyll a concentrations

Sayaka Yasunaka, Eko Siswanto, Are Olsen, Mario Hoppema, Eiji Watanabe, Agneta Fransson, Melissa Chierici, Akihiko Murata, Siv K. Lauvset, Rik Wanninkhof, Taro Takahashi, Naohiro Kosugi, Abdirahman M. Omar, Steven van Heuven, and Jeremy T. Mathis

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Final revised paper (published on 22 Mar 2018)
Supplement to the final revised paper
Preprint (discussion started on 31 Jul 2017)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Comments to the manuscript titled: “Arctic Ocean CO2 uptake: an improved multi-year estimate of the air–sea CO2 flux incorporating chlorophyll-a concentrations”.', Anonymous Referee #1, 20 Sep 2017
- AC1: 'Response to anonymous Referee #1', Sayaka Yasunaka, 07 Nov 2017
RC2: 'Review of “Arctic Ocean CO2 uptake: an improved multi-year estimate of the air-sea CO2 flux incorporating chlorophyll-a concentrations.', Anonymous Referee #2, 25 Sep 2017
- AC2: 'Response to anonymous Reviewer 2', Sayaka Yasunaka, 07 Nov 2017

Peer-review completion

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

ED: Reconsider after major revisions (07 Nov 2017) by Alexey V. Eliseev

AR by Sayaka Yasunaka on behalf of the Authors (19 Dec 2017) Author's response Manuscript

ED: Referee Nomination & Report Request started (19 Dec 2017) by Alexey V. Eliseev

RR by Anonymous Referee #1 (25 Jan 2018)

ED: Publish subject to technical corrections (25 Jan 2018) by Alexey V. Eliseev

AR by Sayaka Yasunaka on behalf of the Authors (30 Jan 2018) Author's response Manuscript

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Short summary

We estimated monthly air–sea CO₂ fluxes in the Arctic Ocean and its adjacent seas north of 60° N from 1997 to 2014, after mapping pCO₂ in the surface water using a self-organizing map technique. The addition of Chl a as a parameter enabled us to improve the estimate of pCO₂ via better representation of its decline in spring. The uncertainty in the CO₂ flux estimate was reduced, and a net annual Arctic Ocean CO₂ uptake of 180 ± 130 Tg C y⁻¹ was determined to be significant.