Articles | Volume 17, issue 5
Clim. Past, 17, 2273–2289, 2021
https://doi.org/10.5194/cp-17-2273-2021
Clim. Past, 17, 2273–2289, 2021
https://doi.org/10.5194/cp-17-2273-2021

Research article 27 Oct 2021

Research article | 27 Oct 2021

Evolution of mean ocean temperature in Marine Isotope Stage 4

Sarah Shackleton et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on cp-2021-8', Andreas Schmittner, 10 Feb 2021
    • AC1: 'Reply on CC1', Sarah Shackleton, 29 Jul 2021
  • RC1: 'Review of 'Evolution of mean ocean temperature in Marine Isotope Stages 5-4' by Shackleton et al. 2021', Anonymous Referee #1, 31 Mar 2021
    • AC2: 'Reply on RC1', Sarah Shackleton, 29 Jul 2021
  • RC2: 'Referee comment', Anonymous Referee #2, 18 May 2021
    • AC3: 'Reply on RC2', Sarah Shackleton, 29 Jul 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (06 Aug 2021) by Alessio Rovere
AR by Sarah Shackleton on behalf of the Authors (09 Aug 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (10 Aug 2021) by Alessio Rovere
RR by Anonymous Referee #1 (27 Aug 2021)
ED: Publish as is (01 Sep 2021) by Alessio Rovere

Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Sarah Shackleton on behalf of the Authors (20 Oct 2021)   Author's adjustment   Manuscript
EA: Adjustments approved (20 Oct 2021) by Alessio Rovere
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Short summary
In this study, we measure atmospheric noble gases trapped in ice cores to reconstruct ocean temperature during the last glaciation. Comparing the new reconstruction to other climate records, we show that the ocean reached its coldest temperatures before ice sheets reached maximum volumes and atmospheric CO2 reached its lowest concentrations. Ocean cooling played a major role in lowering atmospheric CO2 early in the glaciation, but it only played a minor role later.