Articles | Volume 19, issue 10
https://doi.org/10.5194/tc-19-4525-2025
https://doi.org/10.5194/tc-19-4525-2025
Brief communication
 | 
14 Oct 2025
Brief communication |  | 14 Oct 2025

Brief communication: Reanalyses underperform in cold regions, raising concerns for climate services and research

Bin Cao and Stephan Gruber

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2025-575', Steven Margulis, 28 Feb 2025
  • RC1: 'Comment on egusphere-2025-575', Anonymous Referee #1, 01 Apr 2025
    • AC1: 'Quick Reply on RC1', Bin Cao, 02 Apr 2025
    • AC3: 'Reply on RC1', Bin Cao, 20 May 2025
  • RC2: 'Comment on egusphere-2025-575', Anonymous Referee #2, 19 Apr 2025

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (further review by editor and referees) (20 May 2025) by Cécile Ménard
AR by Bin Cao on behalf of the Authors (20 May 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (02 Jun 2025) by Cécile Ménard
RR by Anonymous Referee #1 (10 Jun 2025)
RR by Anonymous Referee #2 (22 Jun 2025)
ED: Publish subject to minor revisions (review by editor) (04 Jul 2025) by Cécile Ménard
AR by Bin Cao on behalf of the Authors (11 Jul 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (28 Jul 2025) by Cécile Ménard
AR by Bin Cao on behalf of the Authors (28 Jul 2025)
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Short summary
The climate-driven changes in cold regions have an outsized importance for local resilient communities and for global climate through teleconnections. We show that reanalyses are less accurate in cold regions compared to other more populated regions, coincident with the low density of observations. Our findings likely point to similar gaps in our knowledge and capabilities of climate research and services in cold regions.
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