Volume 90 Issue 17 | p. 33 | Concentrates
Issue Date: April 23, 2012

Aerosols Expand Through Surface Reactions

Results implicate heterogeneous processes in particle growth mechanism
Department: Science & Technology
News Channels: Environmental SCENE
Keywords: aerosol, atmosphere, climate, precipitation

Reactions on the surface of airborne particles may explain why they grow faster than traditional models predict (Proc. Natl. Acad. Sci. USA, DOI: 10.1073/pnas.1120593109). Atmospheric aerosols affect precipitation and climate, and they are also associated with adverse health effects. Whereas primary aerosols are emitted directly into the air, secondary aerosols form in the atmosphere. Traditionally, scientists believed that secondary organic aerosols grew through a mechanism in which volatile . . .

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