Articles | Volume 17, issue 1
© Author(s) 2023. This work is distributed underthe Creative Commons Attribution 4.0 License.
Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere
- Final revised paper (published on 31 Jan 2023)
- Supplement to the final revised paper
- Preprint (discussion started on 17 Oct 2022)
- Supplement to the preprint
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor |
: Report abuse
RC1: 'Comment on tc-2022-201', Anonymous Referee #1, 02 Dec 2022
- AC1: 'Reply on RC1', Hugues Goosse, 20 Dec 2022
RC2: 'Comment on tc-2022-201', Anonymous Referee #2, 05 Dec 2022
- AC2: 'Reply on RC2', Hugues Goosse, 20 Dec 2022
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to minor revisions (review by editor) (30 Dec 2022) by Christian Haas
AR by Hugues Goosse on behalf of the Authors (05 Jan 2023) Author's response Manuscript
EF by Ariane Baumbach (09 Jan 2023) Author's tracked changes
ED: Publish as is (12 Jan 2023) by Christian Haas
AR by Hugues Goosse on behalf of the Authors (13 Jan 2023)
This is a review of the manuscript Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere by Goosse et al.
In reviewing this manuscript, I looked at the rationale for the research, the method of study (I did not evaluate the models themselves) and the interpretation of the results.
This is article describes a careful attempt to isolate factors that influence the seasonal cycle of Antarctic sea ice extent and to explain how they do so. The manuscript is well written. The research problem is clearly stated – “what, other than the cycle of insolation influences/controls the asymmetry of the seasonal cycle of Antarctic sea ice extent?”. The goals of the study are clear as are the arguments supporting the need for the research and the links to already existing work.
The authors use a series of sensitivity modeling studies to determine the roles of the oceanic and atmospheric processes in the seasonal cycle of Antarctic sea ice. More specifically, they examine the sea ice (extent, volume, timing of advance and retreat and growth/melt rates) responses to changes in the mixed layer depth (and the implied impact on heat storage), sea ice thickness, surface albedo, and ice dynamics. These simulations are short and there are caveats, but these are clearly stated, and results are interpreted within the bounds of these caveats. Even with these constraints, the results allow a better understanding of how the sea ice responds to different processes and the role of the atmosphere.
Overall, this study is immediately valuable to the field. It is, to my knowledge, the first of its kind to try to assess the response of the seasonal cycle to these key processes. Of course, sensitivity studies that involve a longer set of simulations may give more (statistically) reliable results, but these initial results seem physically sound and have great potential for interpreting and understanding the variability seen in observations sea ice extent around Antarctica.
I have only a few minor comments/suggestions to make. They follow.
Line 205/206: How valid is this assumption - biases are small enough to have only a marginal effect on the response to the perturbation?
Line 229/230 - Are you saying that this (assuming that sea ice salinity is the same as
the ocean surface salinity) is what you did in the model? I assume yes. So, make this an active statement.
Line 237/238 – I had to read several times to make sure that I understood what you meant. This, way of writing makes it a little confusing. Can you redraft for clarity?
Line 256/257 - This assumption might very well be valid but here the atmospheric feedbacks focus on the heat exchanges. Can you make any comment on the effect that the lack of dynamics associated with atmospheric motion might have on your simulations?
Lines 375 -383 – It is worth it to include a Figure reference here to aid the reader.