Linking European droughts to year-round weather regimes

Savary, Onaïa; Ardilouze, Constantin; Cattiaux, Julien

doi:10.5194/wcd-7-223-2026

Articles | Volume 7, issue 1

https://doi.org/10.5194/wcd-7-223-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/wcd-7-223-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 7, issue 1

Research article

|

28 Jan 2026

Research article |

| 28 Jan 2026

Linking European droughts to year-round weather regimes

Onaïa Savary, Constantin Ardilouze, and Julien Cattiaux

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Final revised paper (published on 28 Jan 2026)
Supplement to the final revised paper
Preprint (discussion started on 22 Jul 2025)

Interactive discussion

Status: closed

RC1:
'Comment on egusphere-2025-3308', Anonymous Referee #1, 21 Aug 2025

The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2025/egusphere-2025-3308/egusphere-2025-3308-RC1-supplement.pdf

Citation: https://doi.org/10.5194/egusphere-2025-3308-RC1
- AC1: 'Reply on RC1, RC2 and editor', Onaïa Savary, 15 Oct 2025
  
  Dear referees,
  
  We appreciate your constructive feedback on our manuscript. We have elaborated a point-by-point response to your comments in the attached document. We hope that our response addresses your concerns.
  
  Best regards,
  
  On behalf of the authors,
  
  Onaïa Savary, Constantin Ardilouze and Julien Cattiaux
  
  Citation: https://doi.org/10.5194/egusphere-2025-3308-AC1
- AC2: 'Reply on RC1, RC2 and editor', Onaïa Savary, 15 Oct 2025
  
  Dear referees,
  
  We appreciate your constructive feedback on our manuscript. We have elaborated a point-by-point response to your comments in the attached document. We hope that our response addresses your concerns.
  
  Best regards,
  
  On behalf of the authors,
  
  Onaïa Savary, Constantin Ardilouze and Julien Cattiaux
  
  Citation: https://doi.org/10.5194/egusphere-2025-3308-AC2
RC2:
'Comment on egusphere-2025-3308', Anonymous Referee #2, 02 Sep 2025

The comment was uploaded in the form of a supplement: https://egusphere.copernicus.org/preprints/2025/egusphere-2025-3308/egusphere-2025-3308-RC2-supplement.pdf

Citation: https://doi.org/10.5194/egusphere-2025-3308-RC2
- AC1: 'Reply on RC1, RC2 and editor', Onaïa Savary, 15 Oct 2025
  
  Dear referees,
  
  We appreciate your constructive feedback on our manuscript. We have elaborated a point-by-point response to your comments in the attached document. We hope that our response addresses your concerns.
  
  Best regards,
  
  On behalf of the authors,
  
  Onaïa Savary, Constantin Ardilouze and Julien Cattiaux
  
  Citation: https://doi.org/10.5194/egusphere-2025-3308-AC1
EC1:
'Editor comment on egusphere-2025-3308', Stephan Pfahl, 11 Sep 2025

Dear Onaïa Savary and co-authors,
Thank you for submitting your study on droughts and weather regimes to WCD. Your manuscript has been evaluated by two reviewers, who both acknowledge the general merits of your work, but also provide major comments and suggestions concerning both your methodological setup and interpretation of your findings. Please carefully account for these comments when preparing a revised version that I would then re-consider for potential publication. In particular, please think about potential adaptations of your methodology, or at least sensitivity tests, accounting for the many methodological comments by both reviewers. In addition, also with regard to the main scope of the journal, it would be very useful to further think about the interpretation of the different terms in your diagnostic (equation 11) with regard to meteorological processes.
I look forward to receiving your revised manuscript.
Best regards,
Stephan Pfahl

Citation: https://doi.org/10.5194/egusphere-2025-3308-EC1
- AC1: 'Reply on RC1, RC2 and editor', Onaïa Savary, 15 Oct 2025
  
  Dear referees,
  
  We appreciate your constructive feedback on our manuscript. We have elaborated a point-by-point response to your comments in the attached document. We hope that our response addresses your concerns.
  
  Best regards,
  
  On behalf of the authors,
  
  Onaïa Savary, Constantin Ardilouze and Julien Cattiaux
  
  Citation: https://doi.org/10.5194/egusphere-2025-3308-AC1

Peer review completion

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

AR by Onaïa Savary on behalf of the Authors (12 Nov 2025) Author's response Author's tracked changes Manuscript

ED: Referee Nomination & Report Request started (14 Nov 2025) by Stephan Pfahl

RR by Anonymous Referee #2 (28 Nov 2025)

RR by Anonymous Referee #1 (12 Dec 2025)

ED: Publish subject to minor revisions (review by editor) (19 Dec 2025) by Stephan Pfahl

AR by Onaïa Savary on behalf of the Authors (09 Jan 2026) Author's response Author's tracked changes Manuscript

ED: Publish subject to technical corrections (16 Jan 2026) by Stephan Pfahl

AR by Onaïa Savary on behalf of the Authors (19 Jan 2026) Manuscript

Short summary

We investigate the link between European meteorological droughts and persistent year-round weather regimes derived from mid-tropospheric circulation. Using a novel regionalization based on drought synchronicity and reanalysis data, we show that regime frequency anomalies partly explain drought occurrence, especially in western Europe and in winter, highlighting both the potential and limits of regime-based drought prediction.

Linking European droughts to year-round weather regimes

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Interactive discussion

Peer review completion

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