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@ARTICLE{McFiggans:860808,
author = {McFiggans, Gordon and Mentel, Thomas F. and Wildt, Jürgen
and Pullinen, Iida and Kang, Sungah and Kleist, Einhard and
Schmitt, Sebastian and Springer, Monika and Tillmann, Ralf
and Wu, Cheng and Zhao, Defeng and Hallquist, Mattias and
Faxon, Cameron and Le Breton, Michael and Hallquist, Åsa M.
and Simpson, David and Bergström, Robert and Jenkin,
Michael E. and Ehn, Mikael and Thornton, Joel A. and
Alfarra, M. Rami and Bannan, Thomas J. and Percival, Carl J.
and Priestley, Michael and Topping, David and
Kiendler-Scharr, Astrid},
title = {{S}econdary organic aerosol reduced by mixture of
atmospheric vapours},
journal = {Nature},
volume = {565},
number = {7741},
issn = {1476-4687},
address = {London [u.a.]},
publisher = {Nature Publ. Group78092},
reportid = {FZJ-2019-01469},
pages = {587 - 593},
year = {2019},
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).},
cin = {IEK-8 / IBG-2},
ddc = {500},
cid = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30700872},
UT = {WOS:000457404000037},
doi = {10.1038/s41586-018-0871-y},
url = {https://juser.fz-juelich.de/record/860808},
}