Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 3
Articles | Volume 25, issue 3
https://doi.org/10.5194/acp-25-1587-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-1587-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 3
Research article
 | 
04 Feb 2025
Research article |  | 04 Feb 2025

Distinct effects of fine and coarse aerosols on microphysical processes of shallow-precipitation systems in summer over southern China

Fengjiao Chen, Yuanjian Yang, Lu Yu, Yang Li, Weiguang Liu, Yan Liu, and Simone Lolli

Data sets

GPM/DPR level-2 algorithm theoretical basis document, NASA Goddard Space Flight Center T. Iguchi et al. https://disc.gsfc.nasa.gov/datasets/GPM_2ADPR_07/summary

tavg1_2d_aer_Nx: MERRA-2 Aerosol Diagnostics 1-hourly (single level, 0.625x0.5) GMAO https://doi.org/10.5067/KLICLTZ8EM9D

Global Land One-kilometer Base Elevation (GLOBE) Digital Elevation Model D. Hastings and K. Paula https://www.ngdc.noaa.gov/mgg/topo/gltiles.html

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

ERA5 hourly data on pressure levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

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Short summary
The microphysical mechanisms of precipitation responsible for the varied impacts of aerosol particles on shallow precipitation remain unclear. This study reveals that coarse aerosol particles invigorate shallow rainfall through enhanced coalescence processes, whereas fine aerosol particles suppress shallow rainfall through intensified microphysical breaks. These impacts are independent of thermodynamic environments but are more significant in low-humidity conditions.
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