ArticleEnvironmental science & technology2022
Ammonium Chloride Associated Aerosol Liquid Water Enhances Haze in Delhi, India.
Article in Environmental science & technology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 64 citations in OpenAlex.
- Control regimes of nitrate air pollution reconciled by multiphase dissociation equilibrium.National science review · 2026Article
- Photolytic oxidation of ammonium chloride as a source of ClNature communications · 2026Article
- Air pollution in New Delhi is more severe than observed due to hygroscopicity-induced bias in aerosol sampling.NPJ clean air · 2025Article
- Significant chlorine emissions from biomass burning affect the long-term atmospheric chemistry in Asia.National science review · 2024Article
- Hydrogen peroxide serves as pivotal fountainhead for aerosol aqueous sulfate formation from a global perspective.Nature communications · 2024Article
- Phase State, Surface Tension, Water Activity, and Accommodation Coefficient of Water-Organic Clusters Near the Critical Size for Atmospheric New Particle Formation.Environmental science & technology · 2023Article
- Thermodynamical framework for effective mitigation of high aerosol loading in the Indo-Gangetic Plain during winter.Scientific reports · 2023Article
- Large contribution of fossil-derived components to aqueous secondary organic aerosols in China.Nature communications · 2022Article
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Authors and funding
12 authors at 12 institutions in 6 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The interaction between water vapor and atmospheric aerosol leads to enhancement in aerosol water content, which facilitates haze development, but its concentrations, sources, and impacts remain largely unknown in polluted urban environments. Here, we show that the Indian capital, Delhi, which tops the list of polluted capital cities, also experiences the highest aerosol water yet reported worldwide. This high aerosol water promotes secondary formation of aerosols and worsens air pollution. We report that severe pollution events are commonly associated with high aerosol water which enhances light scattering and reduces visibility by 70%. Strong light scattering also suppresses the boundary layer height on winter mornings in Delhi, inhibiting dispersal of pollutants and further exacerbating morning pollution peaks. We provide evidence that ammonium chloride is the largest contributor to aerosol water in Delhi, making up 40% on average, and we highlight that regulation of chlorine-containing precursors should be considered in mitigation strategies.
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Registered trials
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