On the role of circulation and mixing in the ventilation of oxygen minimum zones with a focus on the eastern tropical North Atlantic

Brandt, P.; Bange, H. W.; Banyte, D.; Dengler, M.; Didwischus, S.-H.; Fischer, T.; Greatbatch, R. J.; Hahn, J.; Kanzow, T.; Karstensen, J.; Körtzinger, A.; Krahmann, G.; Schmidtko, S.; Stramma, L.; Tanhua, T.; Visbeck, M.

doi:https://doi.org/10.5194/bg-12-489-2015

Articles | Volume 12, issue 2

https://doi.org/10.5194/bg-12-489-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Low oxygen environments in marine, fresh and estuarine...

https://doi.org/10.5194/bg-12-489-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 2

Research article

|

27 Jan 2015

Research article |

| 27 Jan 2015

On the role of circulation and mixing in the ventilation of oxygen minimum zones with a focus on the eastern tropical North Atlantic

P. Brandt, H. W. Bange, D. Banyte, M. Dengler, S.-H. Didwischus, T. Fischer, R. J. Greatbatch, J. Hahn, T. Kanzow, J. Karstensen, A. Körtzinger, G. Krahmann, S. Schmidtko, L. Stramma, T. Tanhua, and M. Visbeck

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Final revised paper (published on 27 Jan 2015)
Preprint (discussion started on 07 Aug 2014)

Interactive discussion

Status: closed

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

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RC C4907: 'Review', Anonymous Referee #1, 04 Sep 2014
- AC C6750: 'Reply to reviewer #1', Peter Brandt, 14 Nov 2014
RC C4996: 'Review: On the role of circulation and mixing in the ventilation of oxygen minimum zones with a focus on the ETNA', Anonymous Referee #2, 09 Sep 2014
- AC C6756: 'Reply to reviewer #2', Peter Brandt, 14 Nov 2014

Peer-review completion

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

AR by Peter Brandt on behalf of the Authors (14 Nov 2014) Author's response

ED: Publish subject to minor revisions (Editor review) (29 Nov 2014) by Lisa Levin

AR by Peter Brandt on behalf of the Authors (08 Dec 2014) Author's response Manuscript

ED: Publish as is (16 Dec 2014) by Lisa Levin

AR by Peter Brandt on behalf of the Authors (16 Dec 2014)

Short summary

Our observational study looks at the structure of the eastern tropical North Atlantic (ETNA) oxygen minimum zone (OMZ) in comparison with the less-ventilated, eastern tropical South Pacific OMZ. We quantify the OMZ’s oxygen budget composed of consumption, advection, lateral and vertical mixing. Substantial oxygen variability is observed on interannual to multidecadal timescales. The deoxygenation of the ETNA OMZ during the last decades represents a substantial imbalance of the oxygen budget.