Change search
ReferencesLink to record
Permanent link

Direct link
Ion-induced nucleation of pure biogenic particles
Show others and affiliations
Number of Authors: 78
2016 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 533, no 7604, 521-526 p.Article in journal (Refereed) Published
Abstract [en]

Atmospheric aerosols and their effect on clouds are thought to be important for anthropogenic radiative forcing of the climate, yet remain poorly understood(1). Globally, around half of cloud condensation nuclei originate from nucleation of atmospheric vapours(2). It is thought that sulfuric acid is essential to initiate most particle formation in the atmosphere(3,4), and that ions have a relatively minor role(5). Some laboratory studies, however, have reported organic particle formation without the intentional addition of sulfuric acid, although contamination could not be excluded(6,7). Here we present evidence for the formation of aerosol particles from highly oxidized biogenic vapours in the absence of sulfuric acid in a large chamber under atmospheric conditions. The highly oxygenated molecules (HOMs) are produced by ozonolysis of a-pinene. We find that ions from Galactic cosmic rays increase the nucleation rate by one to two orders of magnitude compared with neutral nucleation. Our experimental findings are supported by quantum chemical calculations of the cluster binding energies of representative HOMs. Ion-induced nucleation of pure organic particles constitutes a potentially widespread source of aerosol particles in terrestrial environments with low sulfuric acid pollution.

Place, publisher, year, edition, pages
2016. Vol. 533, no 7604, 521-526 p.
National Category
Other Natural Sciences
Identifiers
URN: urn:nbn:se:su:diva-132063DOI: 10.1038/nature17953ISI: 000376443100038PubMedID: 27225125OAI: oai:DiVA.org:su-132063DiVA: diva2:948246
Available from: 2016-07-10 Created: 2016-07-06 Last updated: 2016-07-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Riipinen, Ilona
By organisation
Department of Applied Environmental Science (ITM)
In the same journal
Nature
Other Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 1 hits
ReferencesLink to record
Permanent link

Direct link