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Aerosol formation: Atmospheric particles from organic vapours
April 2002
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Abstract
Aerosol particles produced over forested areas may affect climate by acting as nuclei
for cloud condensation, but their composition (and hence the chemical species that
drive their production) remains an open question. Here we show, to our knowledge for
the first time, that these newly formed particles (3-5 nm in diameter) are composed
primarily of organic species, such as cis-pinonic acid and pinic acid, produced by
oxidation of terpenes in organic vapours released from the canopy.