Difference between the North Atlantic and Pacific meridional overturning circulation in response to the uplift of the Tibetan Plateau

Su, Baohuang; Jiang, Dabang; Zhang, Ran; Sepulchre, Pierre; Ramstein, Gilles

doi:https://doi.org/10.5194/cp-14-751-2018

Articles | Volume 14, issue 6

https://doi.org/10.5194/cp-14-751-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-14-751-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 6

Research article

|

08 Jun 2018

Research article |

| 08 Jun 2018

Difference between the North Atlantic and Pacific meridional overturning circulation in response to the uplift of the Tibetan Plateau

Baohuang Su, Dabang Jiang, Ran Zhang, Pierre Sepulchre, and Gilles Ramstein

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Final revised paper (published on 08 Jun 2018)
Supplement to the final revised paper
Preprint (discussion started on 12 Oct 2017)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review for Intensified Atlantic vs. weakened Pacific meridional overturning circulations in response to Tibetan Plateau uplift', Anonymous Referee #1, 26 Oct 2017
- RC2: 'Review of Su et al.', Anonymous Referee #2, 11 Feb 2018
  - AC2: 'Reply to the comments of reviewer#2', Dabang Jiang, 21 Mar 2018
- AC1: 'reply to the comments of reviewer#1', Dabang Jiang, 21 Mar 2018

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (03 Apr 2018) by Arne Winguth

Dear Dr. Su,

Thank you for submitting your manuscript entitled "Intensified Atlantic vs. weakened Pacific meridional overturning circulations in response to Tibetan Plateau uplift” [Paper #cp-2017-110] to Climate of the Past . I have now received an assessment of the two reviewers. Both reviewers had positive comments that require a minor revision prior to the publication of Climate of the Past.

Following reviewers concerns shall be addressed in the revised version to improve the quality of the manuscript:
1) Why does a removal of Tibetan Plataeu leads to the intensified westerlies over the North Atlantic and weakened subtropical anticyclones and trade winds over the Pacific? Are these changes a direct atmospheric response of TP removal, or including feedbacks of SST?
2) In the NTP experiment, the net freshwater flux increases by 0.005 Sv at the initial stage, but by 0.025 Sv at the final stage. The author should discuss if fresh water flux of 0.005Sv is strong enough to trigger the weakening of AMOC. I
3) The T31 version of CESM is known to have significant climate biases, especially in high-latitude regions that are a main focus for this paper (including Arctic sea ice extent). Implications of these model biases on the results and conclusions shall be discussed.
4) Avoid use of "vs." in the title and replace it with the word "difference" e.g.
"Difference between the Atlantic and Pacific meridional overturning circulation in response to the uplift of the Tibetan Plateau"

The feedback provided in the reviewer assessments of your manuscript is important and should be taken into account as you complete your revision. Please include a marked-up manuscript version showing the changes made in your revision. I encourage you to submit a suitably revised version of your manuscript by May 15, 2018.

Sincerely,
Arne Winguth
Editor

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AR by Dabang Jiang on behalf of the Authors (08 Apr 2018) Author's response Manuscript

ED: Publish as is (04 May 2018) by Arne Winguth

AR by Dabang Jiang on behalf of the Authors (07 May 2018) Manuscript

Short summary

The present numerical experiments undertaken by a coupled atmosphere–ocean model indicate that the uplift of the Tibetan Plateau alone could have been a potential driver for the reorganization of Pacific and Atlantic meridional overturning circulations between the late Eocene and early Oligocene. In other words, the Tibetan Plateau could play an important role in maintaining the current large-scale overturning circulation in the Atlantic and Pacific.