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@ARTICLE{Keel:826880,
author = {Keßel, Stephan and Cabrera-Perez, David and Horowitz,
Abraham and Veres, Patrick R. and Sander, Rolf and
Taraborrelli, Domenico and Tucceri, Maria and Crowley, John
and Pozzer, Andrea and Vereecken, Luc and Lelieveld, Jos and
Williams, Jonathan},
title = {{A}tmospheric chemistry, sources and sinks of carbon
suboxide, {C}302},
journal = {Atmospheric chemistry and physics / Discussions},
volume = {},
issn = {1680-7375},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {FZJ-2017-01096},
pages = {},
year = {2017},
abstract = {Carbon suboxide, O = C = C = C = O, has
been detected in ambient air samples and has the potential
to be a noxious pollutant and oxidant precursor; however,
its lifetime and fate in the atmosphere is largely unknown.
In this work, we collect an extensive set of studies on the
atmospheric chemistry of C3O2. Rate coefficients for the
reactions of C3O2 with OH radicals and ozone were determined
using relative rate techniques as
k4 = (2.6 ± 0.5) × 10−12 cm3 molecule−1 s1
at 295 K (independent of pressure between ~ 25 and
1000 mbar) and
k6 < 1.5 × 10−213 molecule−1 s1 at 295 K.
A theoretical study on the mechanisms of these reactions
indicates that the sole products are CO and CO2, as observed
experimentally. The UV absorption spectrum and the
interaction of C3O2 with water were also investigated,
enabling photodissociation and hydrolysis rates to be
assessed. The role of C3O2 in the atmosphere was examined
using in-situ measurements, an analysis of the atmospheric
sources and sinks, and simulation with the EMAC atmospheric
chemistry – general circulation model. The results
indicate sub-pptv levels at the Earth's surface, up to about
10 pptv in regions with relatively strong sources, e.g. by
biomass burning, and a mean lifetime of ~ 3.2 days. These
predictions carry considerable uncertainty, as more
measurement data are needed to determine ambient
concentrations and constrain the source strengths.},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {243 - Tropospheric trace substances and their
transformation processes (POF3-243)},
pid = {G:(DE-HGF)POF3-243},
typ = {PUB:(DE-HGF)16},
doi = {10.5194/acp-2017-49},
url = {https://juser.fz-juelich.de/record/826880},
}