Sea ice led to poleward-shifted winds at the Last Glacial Maximum: the influence of state dependency on CMIP5 and PMIP3 models

Sime, Louise C.; Hodgson, Dominic; Bracegirdle, Thomas J.; Allen, Claire; Perren, Bianca; Roberts, Stephen; de Boer, Agatha M.

doi:https://doi.org/10.5194/cp-12-2241-2016

Articles | Volume 12, issue 12

https://doi.org/10.5194/cp-12-2241-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Southern perspectives on climate and the environment from...

https://doi.org/10.5194/cp-12-2241-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 12

Research article

|

19 Dec 2016

Research article |

| 19 Dec 2016

Sea ice led to poleward-shifted winds at the Last Glacial Maximum: the influence of state dependency on CMIP5 and PMIP3 models

Louise C. Sime, Dominic Hodgson, Thomas J. Bracegirdle, Claire Allen, Bianca Perren, Stephen Roberts, and Agatha M. de Boer

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Final revised paper (published on 19 Dec 2016)
Preprint (discussion started on 15 Apr 2016)

Interactive discussion

Status: closed

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

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RC1: 'review comments', Anonymous Referee #1, 23 May 2016
RC2: 'Comment on "Sea ice led to poleward-shifted winds at the Last Glacial Maximum: the influence of state dependency on CMIP5 and PMIP3 models" by L. Sime et al.', Anonymous Referee #2, 24 May 2016
RC3: 'Review', Anonymous Referee #3, 26 Jun 2016
AC1: 'Response to reviewers comments', Louise Sime, 29 Jul 2016

Peer-review completion

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

ED: Reconsider after major revisions (01 Aug 2016) by Hugues Goosse

AR by Louise Sime on behalf of the Authors (06 Sep 2016) Author's response Manuscript

ED: Referee Nomination & Report Request started (09 Sep 2016) by Hugues Goosse

RR by Anonymous Referee #1 (11 Oct 2016)

ED: Publish subject to technical corrections (13 Oct 2016) by Hugues Goosse

AR by Louise Sime on behalf of the Authors (28 Oct 2016) Manuscript

Short summary

Latitudinal shifts in the Southern Ocean westerly wind jet could explain large observed changes in the glacial to interglacial ocean CO₂ inventory. However there is considerable disagreement in modelled deglacial-warming jet shifts. Here multi-model output is used to show that expansion of sea ice during the glacial period likely caused a slight poleward shift and intensification in the westerly wind jet. Issues with model representation of the winds caused much of the previous disagreement.