Volume 90 Issue 36 | p. 59 | Concentrates
Issue Date: September 3, 2012

Urban Soot Particles May Warm Climate Less Than Believed

Chemical aging of black carbon aerosols does not significantly increase radiation absorption
Department: Science & Technology
News Channels: Environmental SCENE, Materials SCENE, Analytical SCENE
Keywords: aerosol, atmosphere, black carbon, soot, climate, global warming

Studies of urban soot particles indicate that scientists may be overestimating the climate-warming effect of such aerosols (Science, DOI: 10.1126/science.1223447). Combustion of fossil fuels or plant material emits soot, also called black carbon, to the atmosphere, where the particles can absorb sunlight. Researchers believed that subsequent chemical reactions in the air added coatings that could act as a lens to increase radiation . . .

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