Recent changes in extreme wave events in the south-western South Atlantic

Gramcianinov, Carolina B.; Staneva, Joanna; Souza, Celia R. G.; Linhares, Priscila; de Camargo, Ricardo; da Silva Dias, Pedro L.

doi:https://doi.org/10.5194/sp-1-osr7-12-2023

Articles | Volume 1-osr7

https://doi.org/10.5194/sp-1-osr7-12-2023

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

Report:

7th edition of the Copernicus Ocean State Report (OSR7)

https://doi.org/10.5194/sp-1-osr7-12-2023

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

Articles | Volume 1-osr7

27 Sep 2023

| OSR7 | Chapter 3.3

| 27 Sep 2023 | OSR7 | Chapter 3.3

Recent changes in extreme wave events in the south-western South Atlantic

Carolina B. Gramcianinov, Joanna Staneva, Celia R. G. Souza, Priscila Linhares, Ricardo de Camargo, and Pedro L. da Silva Dias

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Final revised paper (published on 27 Sep 2023)
Preprint (discussion started on 23 Sep 2022)

Interactive discussion

Status: closed

RC1:
'Comment on sp-2022-7', Anonymous Referee #1, 11 Oct 2022

Please find my comments in the attached file.

Citation: https://doi.org/10.5194/sp-2022-7-RC1
- AC1: 'Reply on RC1', Carolina Gramcianinov, 20 Feb 2023
  
  Dear reviewer,
  Thank you for your comments and suggestions and for the time dedicated to this detailed revision.
  The responses of general and specific comments are in the enclosed document.
  
  Citation: https://doi.org/10.5194/sp-2022-7-AC1
RC2:
'Comment on sp-2022-7', Alejandro Orfila, 09 Jan 2023
Review Ms sp-2022-7 ‘’Recent changes in extreme wave events in the Southwestern South

Atlantic’’ by Gramcianinov et al.

The Ms. studies the spatial and temporal variability in the extreme wave events in the Southwest South Atlantic using CMEMS global wave reanalisis and near real time products for the period 1993-2021. Authors analyze the annual and seasonal Hs, extreme wave events defined as the 95th percentile of Hs, peak period, intensity, wave direction and wave power providing insights on how trends would impact the coastal zone using a coastal hazards database. The paper is well written, the methods sound, and the research provides a good overview of the long term evolution of extreme wave events in the area of the SWSA. Prior publication however some minor points should be addressed.

Why is the duration for the extreme events set as 48h?. Usually a 72h period is considered for an independent analysis of storms.

Regarding #1. Is the intensity and number of events robust in front of the time window?.

Figure 2. If possible I suggest to include in this <figure the wave power due to the additional interest in potential locations for power generation.

Figure 3. The caption does not correspond to the Figure.

Figure 3 a,b, c and d. Besides the trend, can there be any relation in the wave climate and extreme events inferred from the large scale climatic modes of variability? (see for instance https://doi.org/10.1016/j.pocean.2021.102660).

The paper is a very nice contribution.
Citation: https://doi.org/10.5194/sp-2022-7-RC2
- AC2: 'Reply on RC2', Carolina Gramcianinov, 20 Feb 2023
  
  Dear Dr. Alejandro Orfila,
  
  Thank you very much for your comments and suggestions. Enclosed you will find the responses to your comments.
  
  Citation: https://doi.org/10.5194/sp-2022-7-AC2

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload

ED: Publish subject to revisions (further review by editor and referees) (22 Feb 2023) by Marta Marcos

AR by Carolina Gramcianinov on behalf of the Authors (08 Mar 2023) Author's response Author's tracked changes Manuscript

ED: Publish subject to revisions (further review by editor and referees) (10 Mar 2023) by Marta Marcos

ED: Referee Nomination & Report Request started (14 Mar 2023) by Marta Marcos

RR by Anonymous Referee #1 (28 Mar 2023)

ED: Publish as is (29 Mar 2023) by Marta Marcos

ED: Publish as is (31 Mar 2023) by Marilaure Grégoire (Chief editor)

AR by Carolina Gramcianinov on behalf of the Authors (06 Apr 2023) Manuscript

Short summary

We analyse extreme wave event trends in the south-western South Atlantic in the last 29 years using wave products and coastal hazard records. The results show important regional changes associated with increased mean sea wave height, wave period, and wave power. We also find a rise in the number of coastal hazards related to waves affecting the state of São Paulo, Brazil, which partially agrees with the increase in extreme waves in the adjacent ocean sector but is also driven by local factors.