Articles | Volume 24, issue 11
https://doi.org/10.5194/acp-24-6635-2024
https://doi.org/10.5194/acp-24-6635-2024
Research article
 | 
06 Jun 2024
Research article |  | 06 Jun 2024

Role of atmospheric aerosols in severe winter fog over the Indo-Gangetic Plain of India: a case study

Chandrakala Bharali, Mary Barth, Rajesh Kumar, Sachin D. Ghude, Vinayak Sinha, and Baerbel Sinha

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Short summary
This study examines the role of atmospheric aerosols in winter fog over the Indo-Gangetic Plains of India using WRF-Chem.  The increase in RH with aerosol–radiation feedback (ARF) is found to be important for fog formation as it promotes the growth of aerosols in the polluted environment. Aqueous-phase chemistry in the fog increases PM2.5 concentration, further affecting ARF. ARF and aqueous-phase chemistry affect the fog intensity and the timing of fog formation by ~1–2 h.
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