Articles | Volume 13, issue 4
https://doi.org/10.5194/cp-13-345-2017
https://doi.org/10.5194/cp-13-345-2017
Research article
 | 
18 Apr 2017
Research article |  | 18 Apr 2017

δ13C decreases in the upper western South Atlantic during Heinrich Stadials 3 and 2

Marília C. Campos, Cristiano M. Chiessi, Ines Voigt, Alberto R. Piola, Henning Kuhnert, and Stefan Mulitza

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (31 Oct 2016) by Zhengtang Guo
AR by Marília de Carvalho Campos on behalf of the Authors (12 Dec 2016)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (13 Dec 2016) by Zhengtang Guo
RR by Anonymous Referee #1 (04 Jan 2017)
RR by Anonymous Referee #2 (15 Jan 2017)
ED: Publish subject to minor revisions (review by Editor) (29 Jan 2017) by Zhengtang Guo
AR by Marília de Carvalho Campos on behalf of the Authors (22 Feb 2017)  Author's response   Manuscript 
ED: Publish as is (16 Mar 2017) by Zhengtang Guo
AR by Marília de Carvalho Campos on behalf of the Authors (22 Mar 2017)
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Short summary
Our new planktonic foraminiferal stable carbon isotopic data from the western South Atlantic show major decreases during abrupt climate change events of the last glacial. These anomalies are likely related to periods of a sluggish Atlantic meridional overturning circulation and increase (decrease) in atmospheric CO2 (stable carbon isotopic ratios). We hypothesize that strengthening of Southern Ocean deep-water ventilation and weakening of the biological pump are responsible for these decreases.