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@ARTICLE{Lennartz:864601,
      author       = {Lennartz, Sinikka T. and von Hobe, Marc and Booge, Dennis
                      and Bittig, Henry C. and Fischer, Tim and Gonçalves-Araujo,
                      Rafael and Ksionzek, Kerstin B. and Koch, Boris P. and
                      Bracher, Astrid and Röttgers, Rüdiger and Quack, Birgit
                      and Marandino, Christa A.},
      title        = {{T}he influence of dissolved organic matter on the marine
                      production of carbonyl sulfide ({OCS}) and carbon disulfide
                      ({CS}$_{2}$) in the {P}eruvian upwelling},
      journal      = {Ocean science},
      volume       = {15},
      number       = {4},
      issn         = {1812-0792},
      address      = {Katlenburg-Lindau},
      publisher    = {Copernicus Publ.},
      reportid     = {FZJ-2019-04311},
      pages        = {1071 - 1090},
      year         = {2019},
      abstract     = {Oceanic emissions of the climate-relevant trace gases
                      carbonyl sulfide (OCS) and carbon disulfide (CS2) are a
                      major source to their atmospheric budget. Their current and
                      future emission estimates are still uncertain due to
                      incomplete process understanding and therefore inexact
                      quantification across different biogeochemical regimes. Here
                      we present the first concurrent measurements of both gases
                      together with related fractions of the dissolved organic
                      matter (DOM) pool, i.e., solid-phase extractable dissolved
                      organic sulfur (DOSSPE, n=24, 0.16±0.04 µmol L−1),
                      chromophoric (CDOM, n=76, 0.152±0.03), and fluorescent
                      dissolved organic matter (FDOM, n=35), from the Peruvian
                      upwelling region (Guayaquil, Ecuador to Antofagasta, Chile,
                      October 2015). OCS was measured continuously with an
                      equilibrator connected to an off-axis integrated cavity
                      output spectrometer at the surface
                      (29.8±19.8 pmol L−1) and at four profiles ranging
                      down to 136 m. CS2 was measured at the surface (n=143,
                      17.8±9.0 pmol L−1) and below, ranging down to
                      1000 m (24 profiles). These observations were used to
                      estimate in situ production rates and identify their
                      drivers. We find different limiting factors of marine
                      photoproduction: while OCS production is limited by the
                      humic-like DOM fraction that can act as a photosensitizer,
                      high CS2 production coincides with high DOSSPE
                      concentration. Quantifying OCS photoproduction using a
                      specific humic-like FDOM component as proxy, together with
                      an updated parameterization for dark production, improves
                      agreement with observations in a 1-D biogeochemical model.
                      Our results will help to better predict oceanic
                      concentrations and emissions of both gases on regional and,
                      potentially, global scales.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {244 - Composition and dynamics of the upper troposphere and
                      middle atmosphere (POF3-244)},
      pid          = {G:(DE-HGF)POF3-244},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000481688300001},
      doi          = {10.5194/os-15-1071-2019},
      url          = {https://juser.fz-juelich.de/record/864601},
}