Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 3
Articles | Volume 26, issue 3
https://doi.org/10.5194/acp-26-1907-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-1907-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 3
Research article
 | 
06 Feb 2026
Research article |  | 06 Feb 2026

Sensitivity of photochemical surface ozone formation regimes to emissions and meteorology in India

Gopalakrishna Pillai Gopikrishnan, Daniel M. Westervelt, and Jayanarayanan Kuttippurath

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Short summary
This study examines the inverse effect of aerosol surface area and particulate matter (PM) reduction on air quality and atmospheric chemistry, particularly on surface ozone levels. Aerosols act as surfaces for the uptake of hydroxyl radicals (HO2), which are essential for controlling ozone formation. Reducing aerosols and PM may enhance surface ozone formation, thus worsening air quality. However, further efforts to decrease NOx emissions could mitigate this rise in surface ozone levels.
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