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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},
}