McFiggans, Gordon, Mentel, Thomas F., Wildt, Juergen, Pullinen, Iida, Kang, Sungah, Kleist, Einhard, Schmitt, Sebastian, Springer, Monika, Tillmann, Ralf ORCID: 0000-0003-0648-6622, Wu, Cheng, Zhao, Defeng ORCID: 0000-0002-8790-7283, Hallquist, Mattias ORCID: 0000-0001-5691-1231, Faxon, Cameron, Le Breton, Michael, Hallquist, Asa M., Simpson, David ORCID: 0000-0001-9538-3208, Bergstrom, Robert ORCID: 0000-0003-2910-747X, Jenkin, Michael E., Ehn, Mikael ORCID: 0000-0002-0215-4893, Thornton, Joel A., Alfarra, M. Rami, Bannan, Thomas J., Percival, Carl J., Priestley, Michael, Topping, David and Kiendler-Scharr, Astrid (2019). Secondary organic aerosol reduced by mixture of atmospheric vapours. Nature, 565 (7741). S. 587 - 594. LONDON: NATURE PUBLISHING GROUP. ISSN 1476-4687

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Abstract

Secondary organic aerosol contributes to the atmospheric particle burden with implications for air quality and climate. Biogenic volatile organic compounds such as terpenoids emitted from plants are important secondary organic aerosol precursors with isoprene dominating the emissions of biogenic volatile organic compounds globally. However, the particle mass from isoprene oxidation is generally modest compared to that of other terpenoids. Here we show that isoprene, carbon monoxide and methane can each suppress the instantaneous mass and the overall mass yield derived from monoterpenes in mixtures of atmospheric vapours. We find that isoprene 'scavenges' hydroxyl radicals, preventing their reaction with monoterpenes, and the resulting isoprene peroxy radicals scavenge highly oxygenated monoterpene products. These effects reduce the yield of low-volatility products that would otherwise form secondary organic aerosol. Global model calculations indicate that oxidant and product scavenging can operate effectively in the real atmosphere. Thus highly reactive compounds (such as isoprene) that produce a modest amount of aerosol are not necessarily net producers of secondary organic particle mass and their oxidation in mixtures of atmospheric vapours can suppress both particle number and mass of secondary organic aerosol. We suggest that formation mechanisms of secondary organic aerosol in the atmosphere need to be considered more realistically, accounting for mechanistic interactions between the products of oxidizing precursor molecules (as is recognized to be necessary when modelling ozone production).

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
McFiggans, GordonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mentel, Thomas F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wildt, JuergenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pullinen, IidaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kang, SungahUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kleist, EinhardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmitt, SebastianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Springer, MonikaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tillmann, RalfUNSPECIFIEDorcid.org/0000-0003-0648-6622UNSPECIFIED
Wu, ChengUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhao, DefengUNSPECIFIEDorcid.org/0000-0002-8790-7283UNSPECIFIED
Hallquist, MattiasUNSPECIFIEDorcid.org/0000-0001-5691-1231UNSPECIFIED
Faxon, CameronUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Le Breton, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hallquist, Asa M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simpson, DavidUNSPECIFIEDorcid.org/0000-0001-9538-3208UNSPECIFIED
Bergstrom, RobertUNSPECIFIEDorcid.org/0000-0003-2910-747XUNSPECIFIED
Jenkin, Michael E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ehn, MikaelUNSPECIFIEDorcid.org/0000-0002-0215-4893UNSPECIFIED
Thornton, Joel A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alfarra, M. RamiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bannan, Thomas J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Percival, Carl J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Priestley, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Topping, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kiendler-Scharr, AstridUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-158729
DOI: 10.1038/s41586-018-0871-y
Journal or Publication Title: Nature
Volume: 565
Number: 7741
Page Range: S. 587 - 594
Date: 2019
Publisher: NATURE PUBLISHING GROUP
Place of Publication: LONDON
ISSN: 1476-4687
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
PARTICLE FORMATION; SOA FORMATION; ISOPRENE; PHOTOOXIDATION; EMISSIONS; OXIDATION; MODEL; NOX; CHEMISTRY; CHAMBERSMultiple languages
Multidisciplinary SciencesMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/15872

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