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@ARTICLE{vonHobe:1015297,
      author       = {von Hobe, Marc and Taraborrelli, Domenico and Alber, Sascha
                      and Bohn, Birger and Dorn, Hans-Peter and Fuchs, Hendrik and
                      Li, Yun and Qiu, Chenxi and Rohrer, Franz and Sommariva,
                      Roberto and Stroh, Fred and Tan, Zhaofeng and Wedel, Sergej
                      and Novelli, Anna},
      title        = {{M}easurement report: {C}arbonyl sulfide production during
                      dimethyl sulfide oxidation in the atmospheric simulation
                      chamber {SAPHIR}},
      journal      = {Atmospheric chemistry and physics},
      volume       = {23},
      number       = {18},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2023-03642},
      pages        = {10609 - 10623},
      year         = {2023},
      abstract     = {Carbonyl sulfide (OCS), the most abundant sulfur gas in the
                      Earth's atmosphere, is a greenhouse gas, a precursor to
                      stratospheric sulfate aerosol, and a proxy for terrestrial
                      CO2 uptake. Estimates of important OCS sources and sinks
                      still have significant uncertainties and the global budget
                      is not considered closed. One particularly uncertain source
                      term, the OCS production during the atmospheric oxidation of
                      dimethyl sulfide (DMS) emitted by the oceans, is addressed
                      by a series of experiments in the atmospheric simulation
                      chamber SAPHIR in conditions comparable to the remote marine
                      atmosphere. DMS oxidation was initiated with OH and/or Cl
                      radicals and DMS, OCS, and several oxidation products and
                      intermediates were measured, including hydroperoxymethyl
                      thioformate (HPMTF), which was recently found to play a key
                      role in DMS oxidation in the marine atmosphere. One
                      important finding is that the onset of HPMTF and OCS
                      formation occurred faster than expected from the current
                      chemical mechanisms. In agreement with other recent studies,
                      OCS yields between $9 \%$ and $12 \%$ were observed in
                      our experiments. Such yields are substantially higher than
                      the $0.7 \%$ yield measured in laboratory experiments in
                      the 1990s, which is generally used to estimate the indirect
                      OCS source from DMS in global budget estimates. However, we
                      do not expect the higher yields found in our experiments to
                      directly translate into a substantially higher OCS source
                      from DMS oxidation in the real atmosphere, where conditions
                      are highly variable, and, as pointed out in recent work,
                      heterogeneous HPMTF loss is expected to effectively limit
                      OCS production via this pathway. Together with other
                      experimental studies, our results will be helpful to further
                      elucidate the DMS oxidation chemical mechanism and in
                      particular the paths leading to OCS formation.},
      cin          = {IEK-7 / IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013 / I:(DE-Juel1)IEK-8-20101013},
      pnm          = {2111 - Air Quality (POF4-211) / 2112 - Climate Feedbacks
                      (POF4-211)},
      pid          = {G:(DE-HGF)POF4-2111 / G:(DE-HGF)POF4-2112},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001161773700001},
      doi          = {10.5194/acp-23-10609-2023},
      url          = {https://juser.fz-juelich.de/record/1015297},
}