Articles | Volume 17, issue 5
Research article
21 Oct 2021
Research article |  | 21 Oct 2021

Data-constrained assessment of ocean circulation changes since the middle Miocene in an Earth system model

Katherine A. Crichton, Andy Ridgwell, Daniel J. Lunt, Alex Farnsworth, and Paul N. Pearson


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 (18 Sep 2020) by Yannick Donnadieu
AR by Katherine Crichton on behalf of the Authors (10 May 2021)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (12 Jul 2021) by Yannick Donnadieu
RR by Anta-Clarisse Sarr (23 Jul 2021)
ED: Publish subject to technical corrections (27 Aug 2021) by Yannick Donnadieu
AR by Katherine Crichton on behalf of the Authors (10 Sep 2021)  Author's response    Manuscript
Short summary
The middle Miocene (15 Ma) was a period of global warmth up to 8 °C warmer than present. We investigate changes in ocean circulation and heat distribution since the middle Miocene and the cooling to the present using the cGENIE Earth system model. We create seven time slices at ~2.5 Myr intervals, constrained with paleo-proxy data, showing a progressive reduction in atmospheric CO2 and a strengthening of the Atlantic Meridional Overturning Circulation.