Volume 90 Issue 37 | p. 27 | Concentrates
Issue Date: September 10, 2012

Late-Night Nitrates Produce Aerosols

Nighttime chemistry is important for particles involved in air quality, weather, and climate
Department: Science & Technology
News Channels: Environmental SCENE
Keywords: atmosphere, aerosols, nitrate radical, NOx, climate, weather

Nitrate radical chemistry taking place during the wee hours can drive atmospheric aerosol formation, according to a report published in Science (DOI: 10.1126/science.1221520). So-called secondary organic aerosols that form in the atmosphere when oxidized organic compounds condense can affect air quality, weather, and climate. Laboratory experiments previously predicted that the chemistry of nitrogen oxides, which produce nitrate radicals, would affect secondary aerosol formation. But the effect had not been observed in nature. A . . .

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