Atmospheric chemistry and aerosols

Atmospheric chemistry and aerosols is the study of tiny solid and liquid particles suspended in the air—ranging from soot and smoke to secondary organic compounds formed through chemical reactions in the atmosphere—and the ways these particles shape both air quality and Earth's climate. Black carbon from combustion absorbs sunlight and warms the atmosphere, while other aerosols scatter radiation or seed cloud formation, making their net climate effect one of the largest sources of uncertainty in projections of future warming. Researchers are actively working to untangle how aerosols form from gaseous precursors, how their chemical composition evolves as they age in the atmosphere, and how to build emission models accurate enough to reproduce observed pollution episodes like urban haze. Better constraints on aerosol sources and their radiative forcing remain central challenges, with implications for both climate policy and the billions of people living in regions where particulate pollution regularly exceeds safe limits.

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171,447

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Keywords

Atmospheric AerosolsBlack CarbonOrganic AerosolAir QualityClimate ForcingAerosol Formation