Articles | Volume 25, issue 13
https://doi.org/10.5194/acp-25-7299-2025
https://doi.org/10.5194/acp-25-7299-2025
ACP Letters
 | Highlight paper
 | 
14 Jul 2025
ACP Letters | Highlight paper |  | 14 Jul 2025

Observational constraints suggest a smaller effective radiative forcing from aerosol–cloud interactions

Chanyoung Park, Brian J. Soden, Ryan J. Kramer, Tristan S. L'Ecuyer, and Haozhe He

Download

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2024-2547', Erin Raif, 16 Oct 2024
    • AC3: 'Reply on CC1', Chanyoung Park, 04 Dec 2024
      • AC6: 'Reply on AC3', Chanyoung Park, 04 Dec 2024
  • RC1: 'Comment on egusphere-2024-2547', Anonymous Referee #1, 25 Oct 2024
    • AC1: 'Reply on RC1', Chanyoung Park, 04 Dec 2024
      • AC4: 'Reply on AC1', Chanyoung Park, 04 Dec 2024
  • RC2: 'Comment on egusphere-2024-2547', Anonymous Referee #2, 29 Oct 2024
    • AC2: 'Reply on RC2', Chanyoung Park, 04 Dec 2024
      • AC5: 'Reply on AC2', Chanyoung Park, 04 Dec 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Chanyoung Park on behalf of the Authors (04 Dec 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (04 Jan 2025) by Timothy Garrett
RR by Anonymous Referee #1 (31 Jan 2025)
ED: Reconsider after major revisions (04 Feb 2025) by Timothy Garrett
AR by Chanyoung Park on behalf of the Authors (25 Feb 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to minor revisions (review by editor) (13 Mar 2025) by Timothy Garrett
AR by Chanyoung Park on behalf of the Authors (20 Mar 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (29 Mar 2025) by Timothy Garrett
ED: Publish subject to minor revisions (review by editor) (04 Apr 2025) by Ken Carslaw (Executive editor)
AR by Chanyoung Park on behalf of the Authors (08 Apr 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (15 Apr 2025) by Ken Carslaw
ED: Publish as is (15 Apr 2025) by Ken Carslaw (Executive editor)
AR by Chanyoung Park on behalf of the Authors (15 Apr 2025)  Manuscript 
Download
Executive editor
Aerosols moderate climate change by modifying cloud properties to make them more reflective to sunlight, but the magnitude of the effect remains very uncertain, with important implications for future climate change. This study combines satellite observations and reanalysis data to calculate a much weaker radiative forcing due to aerosol-cloud interactions than previous studies. The implication is that aerosols may play a smaller role in climate change than has been widely supposed.
Short summary
This study addresses the long-standing challenge of quantifying the impact of aerosol–cloud interactions. Using satellite observations, reanalysis data, and a "perfect-model" cross-validation, we show that explicitly accounting for aerosol–cloud droplet activation rates is key to accurately estimating ERFaci (effective radiative forcing due to aerosol–cloud interactions). Our results indicate a smaller and less uncertain ERFaci than previously assessed, implying the reduced role of aerosol–cloud interactions in shaping climate sensitivity.
Share
Altmetrics
Final-revised paper
Preprint