Strong aerosol indirect radiative effect from dynamic-driven diurnal variations of cloud water adjustments

Li, Jiayi; Wang, Yang; Li, Jiming; Zhang, Weiyuan; Zhang, Lijie; Wang, Yuan

doi:10.5194/acp-25-17455-2025

Articles | Volume 25, issue 23

https://doi.org/10.5194/acp-25-17455-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-17455-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 23

Research article

|

02 Dec 2025

Research article |

| 02 Dec 2025

Strong aerosol indirect radiative effect from dynamic-driven diurnal variations of cloud water adjustments

Jiayi Li, Yang Wang, Jiming Li, Weiyuan Zhang, Lijie Zhang, and Yuan Wang

Supplement

https://doi.org/10.5194/acp-25-17455-2025-supplement

Data sets

MERRA-2 tavg1_2d_aer_Nx: 2d,1-Hourly,Time-averaged,Single-Level,Assimilation,Aerosol Diagnostics V5.12.4 Global Modeling and Assimilation Office (GMAO) https://doi.org/10.5067/KLICLTZ8EM9D

GPM IMERG Final Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V07 George J. Huffman et al. https://doi.org/10.5067/GPM/IMERG/3B-HH/07

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Short summary

A key challenge in climate projections is the uncertainty in cloud water response to aerosols, especially from unclear diurnal microphysical-dynamical mechanisms. Geostationary satellite shows that neglecting the diurnal variations leads to an underestimation (up to 89 %) of the cooling effect induced by changes in cloud albedo due to aerosol perturbations. The results provide new insights in aerosol-cloud interactions, verifying this is a significant yet often overlooked source of uncertainty.