Articles | Volume 19, issue 3
© Author(s) 2023. This work is distributed underthe Creative Commons Attribution 4.0 License.
Sudden, local temperature increase above the continental slope in the southern Weddell Sea, Antarctica
- Final revised paper (published on 22 May 2023)
- Preprint (discussion started on 04 Jan 2023)
Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor |
: Report abuse
RC1: 'Comment on egusphere-2022-1477', Karen J. Heywood, 12 Feb 2023
- AC1: 'Reply on RC1', Elin Darelius, 28 Mar 2023
RC2: 'Comment on egusphere-2022-1477', Anonymous Referee #2, 24 Feb 2023
- AC2: 'Reply on RC2', Elin Darelius, 28 Mar 2023
Peer review completion
AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Elin Darelius on behalf of the Authors (28 Mar 2023) Author's response Author's tracked changes Manuscript
ED: Publish subject to minor revisions (review by editor) (12 Apr 2023) by Laura de Steur
AR by Elin Darelius on behalf of the Authors (19 Apr 2023) Author's response Author's tracked changes Manuscript
ED: Publish subject to technical corrections (19 Apr 2023) by Laura de Steur
AR by Elin Darelius on behalf of the Authors (20 Apr 2023) Author's response Manuscript
I enjoyed reading this paper. It is well written, clearly presented and interesting, with some ingenious analyses. The figures are very good. A particular strength is the analysis of an excellent long-term climatology that has been carefully assembled of ship, seal and float profiles in a region where there have been relatively few studies. It also presents unusually long time series from moorings near the Filchner Ronne Ice Shelf and on the continental shelf and slope. The paper discusses temporal variability, and in particular, possible causes and implications of an occurrence of surprisingly warm WDW in 2021. I found the estimates of the possible impact on AABW very interesting.
I am happy to recommend acceptance of the paper subject to consideration of some minor suggestions that I list below.
The abstract is nice, but it doesn’t really do justice to the conclusions you came to about the importance of the observed warming, for example for eventual AABW properties. It would be good to include these implications in the abstract.
L17 I wouldn’t say that the Amundsen Sea has a narrow continental shelf – it is hundreds of km from the shelf break to the vulnerable glaciers such as Pine Island and Thwaites.
L23 include a reference to moderate melt rates for FRIS?
L27 typo – you mean tenths not tens of a degree, I think.
L41 I had to read the bit after the Nicholls reference several times, as it’s difficult to make out with the commas and references breaking it up. Try to rephrase to make it easier for readers?
L54 I was curious what the source was of the remaining profiles out of the >1000 that are not ship or seals! Later on it’s clear that these are profiling floats – I would state that here. Also I recommend giving a reference to MEOP to give due credit to those assembling MEOP data – information about how to cite the data is here https://www.meop.net/database/how-to-cite.html.
Probably there is a similar reference to duly acknowledge the efforts of those assembling the Argo float data set? Both these data sources should be cited in the text as well as incldued in the data section at the end.
L64 what is OTE? Expand?
Caption to Figure 2. I get that the mentions of 1515 m depth and the 1300-1700m depth range are referring to the sea bed depth, but maybe that needs to be spelt out more clearly?
L106 and L108 Are these references to the same paper? In review? 2023? Reference list says in prep?
L116 The in review reference should be updated when available?
L118 reference figure 6 here? It takes a while before the reader realises which figure they are meant to be looking at to support this paragraph. It would be helpful to add references to the relevant figure panel throughout this paragraph to help your readers. E.g. the final sentence, L129,
Figure 3. This is a great figure! Very ingenious. There’s a lot of information in these. I found the order of the 4 panels confusing – would it be easier to follow if the 4 panels progressed W-E or E-W? I wondered whether you had plotted the depth of the Tmax in the same way? (not necessarily asking for it to be included in the paper, just curious what it might show – it’s not quite the same thing as figure 5).
L125 I’m being pernickety, but I prefer “decreases” to “drops”, here and elsewhere (e.g. l108)
Caption to Figure 5. Typo here? The color code is surely the year?
L136 I think it would be helpful to add some further explanation of why you consider the green line, 24hr, to be tidal EKE.
L141 I think you should reference the figure showing this result, not the figure showing the locations.
L141 I would not use the word “now”. We don’t know what happened since February 2021, correct? It might be cold again? And it’s ambiguous when “now” is.
Figure 6. What is the red/pink solid line in panels c and d?
Figure 6. Caption says 12 hours to 2 days but figure legend says 14 hours to 2 days?
Figure 6. I think you need more explanation in caption, and also in the text, of the band pass filters you chose. The caption refers to B12, B24 and B35 but these are not defined?
Figure 7. Is this correct? These temperatures seem excessively cold, especially for WDW? They are well below freezing? Check y axis labelling?
L161 We usually say “back of the envelope”.
L161 suggest (plural estimates)
L162 Clarify, needed for what?
L168 I think you mean Weddell Sea Deep Water?
L173 The Foldvik reference needs brackets, also l209 and l217
L186 the references to the figures need Figure.
L238 Brackets need moving.
The paper ends quite abruptly, and I think it would benefit from a bit more discussion of the importance of the results, why they matter (for whom?), and what unanswered questions the work raises?
The Data availability section doesn’t mention float profiles?