Causes and evolution of winter polynyas north of Greenland

Lee, Younjoo J.; Maslowski, Wieslaw; Cassano, John J.; Clement Kinney, Jaclyn; Craig, Anthony P.; Kamal, Samy; Osinski, Robert; Seefeldt, Mark W.; Stroeve, Julienne; Wang, Hailong

doi:https://doi.org/10.5194/tc-17-233-2023

Articles | Volume 17, issue 1

https://doi.org/10.5194/tc-17-233-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-17-233-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 1

Research article

|

18 Jan 2023

Research article |

| 18 Jan 2023

Causes and evolution of winter polynyas north of Greenland

Younjoo J. Lee, Wieslaw Maslowski, John J. Cassano, Jaclyn Clement Kinney, Anthony P. Craig, Samy Kamal, Robert Osinski, Mark W. Seefeldt, Julienne Stroeve, and Hailong Wang

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Final revised paper (published on 18 Jan 2023)
Supplement to the final revised paper
Preprint (discussion started on 29 Sep 2021)
Supplement to the preprint

Interactive discussion

Status: closed

RC1:
'Comment on tc-2021-279', Frank Kauker, 24 Nov 2021

The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2021-279/tc-2021-279-RC1-supplement.pdf

Citation: https://doi.org/10.5194/tc-2021-279-RC1
- AC1: 'Reply on RC1', Younjoo Lee, 04 Apr 2022
  
  We sincerely thank the reviewer for taking the time to provide helpful comments and have addressed them carefully in the revised manuscript.
  As the reviewer suggested, the major revision of this manuscript is the expanded analysis of observed polynyas including the December period from 1979.
  Also, we expanded the analysis of RASM ensembles for the winter months from December to March.
  Please see attached the pdf files for the detailed responses.
  Thank you.
  
  Citation: https://doi.org/10.5194/tc-2021-279-AC1
RC2:
'Comment on tc-2021-279', Axel Schweiger, 15 Feb 2022

See attached PDF

Citation: https://doi.org/10.5194/tc-2021-279-RC2
- AC2: 'Reply on RC2', Younjoo Lee, 04 Apr 2022
  
  We appreciate your constructive comments and have addressed them carefully in the revised manuscript.
  Please see attached the pdf file.
  Thank you.
  
  Citation: https://doi.org/10.5194/tc-2021-279-AC2
AC3: 'Comment on tc-2021-279', Younjoo Lee, 04 Apr 2022

Dear Dr. Christian Haas,
Thank you for your comment on ice deformation and thickening during the 2018 polynya period.
In the revised manuscript, since this study more focuses on the development of polynyas, we briefly mentioned the work by von Albedyll et al. (2021) in the discussion, regarding the contribution of dynamic and thermodynamic processes in sea ice thickness change.
Best,
Younjoo

Citation: https://doi.org/10.5194/tc-2021-279-AC3

Peer review completion

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

ED: Reconsider after major revisions (further review by editor and referees) (24 Apr 2022) by Christian Haas

AR by Younjoo Lee on behalf of the Authors (27 May 2022) Author's response Author's tracked changes Manuscript

ED: Referee Nomination & Report Request started (11 Jun 2022) by Christian Haas

RR by Anonymous Referee #1 (08 Jul 2022)

ED: Publish subject to revisions (further review by editor and referees) (27 Aug 2022) by Christian Haas

AR by Younjoo Lee on behalf of the Authors (22 Nov 2022) Author's response Author's tracked changes Manuscript

ED: Publish as is (02 Dec 2022) by Christian Haas

Short summary

During 1979–2020, four winter polynyas occurred in December 1986 and February 2011, 2017, and 2018 north of Greenland. Instead of ice melting due to the anomalous warm air intrusion, the extreme wind forcing resulted in greater ice transport offshore. Based on the two ensemble runs, representing a 1980s thicker ice vs. a 2010s thinner ice, a dominant cause of these winter polynyas stems from internal variability of atmospheric forcing rather than from the forced response to a warming climate.