Particulate barium tracing of significant mesopelagic carbon remineralisation in the North Atlantic

Lemaitre, Nolwenn; Planquette, Hélène; Planchon, Frédéric; Sarthou, Géraldine; Jacquet, Stéphanie; García-Ibáñez, Maribel I.; Gourain, Arthur; Cheize, Marie; Monin, Laurence; André, Luc; Laha, Priya; Terryn, Herman; Dehairs, Frank

doi:https://doi.org/10.5194/bg-15-2289-2018

Articles | Volume 15, issue 8

https://doi.org/10.5194/bg-15-2289-2018

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

Special issue:

GEOVIDE, an international GEOTRACES study along the OVIDE...

https://doi.org/10.5194/bg-15-2289-2018

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

Articles | Volume 15, issue 8

Research article

|

19 Apr 2018

Research article |

| 19 Apr 2018

Particulate barium tracing of significant mesopelagic carbon remineralisation in the North Atlantic

Nolwenn Lemaitre, Hélène Planquette, Frédéric Planchon, Géraldine Sarthou, Stéphanie Jacquet, Maribel I. García-Ibáñez, Arthur Gourain, Marie Cheize, Laurence Monin, Luc André, Priya Laha, Herman Terryn, and Frank Dehairs

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Final revised paper (published on 19 Apr 2018)
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Preprint (discussion started on 04 Oct 2017)
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Interactive discussion

Status: closed

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

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RC1: 'Review of the manuscript titled Particulate barium tracing significant mesopelagic carbon remineralisation in the North Atlantic by Lemaitre et al. 2017.', Anonymous Referee #1, 16 Dec 2017
- AC1: 'Answer to Referee 1', Nolwenn Lemaitre, 25 Jan 2018
RC2: 'Interesting data and discussion, but needs a bit more work', Anonymous Referee #2, 26 Dec 2017
- AC2: 'Answer to Referee 2', Nolwenn Lemaitre, 25 Jan 2018

Peer-review completion

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

ED: Reconsider after major revisions (13 Feb 2018) by Gilles Reverdin

AR by Nolwenn Lemaitre on behalf of the Authors (13 Feb 2018) Author's response Manuscript

ED: Publish as is (16 Mar 2018) by Gilles Reverdin

AR by Nolwenn Lemaitre on behalf of the Authors (20 Mar 2018) Manuscript

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Short summary

We present the particulate biogenic barium distributions in the North Atlantic for the first time with the objective of estimating mesopelagic carbon remineralisation fluxes. The remineralisation fluxes balanced or slightly exceeded the upper-ocean carbon export fluxes. This is a key result as the North Atlantic is generally assumed to be efficient in transferring carbon to the deep ocean, but during our study, the North Atlantic was characterized by a near-zero carbon sequestration efficiency.