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Direct Observations of Atmospheric Aerosol Nucleation
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2013 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 339, no 6122, 943-946 p.Article in journal (Refereed) Published
Abstract [en]

Atmospheric nucleation is the dominant source of aerosol particles in the global atmosphere and an important player in aerosol climatic effects. The key steps of this process occur in the sub-2-nanometer (nm) size range, in which direct size-segregated observations have not been possible until very recently. Here, we present detailed observations of atmospheric nanoparticles and clusters down to 1-nm mobility diameter. We identified three separate size regimes below 2-nm diameter that build up a physically, chemically, and dynamically consistent framework on atmospheric nucleation-more specifically, aerosol formation via neutral pathways. Our findings emphasize the important role of organic compounds in atmospheric aerosol formation, subsequent aerosol growth, radiative forcing and associated feedbacks between biogenic emissions, clouds, and climate.

Place, publisher, year, edition, pages
2013. Vol. 339, no 6122, 943-946 p.
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Natural Sciences
URN: urn:nbn:se:su:diva-88696DOI: 10.1126/science.1227385ISI: 000315149600045OAI: diva2:612897


Available from: 2013-03-25 Created: 2013-03-25 Last updated: 2013-03-25Bibliographically approved

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Riipinen, Ilona
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Department of Applied Environmental Science (ITM)
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