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@ARTICLE{Rohrer:154495,
      author       = {Rohrer, Franz and Lu, Keding and Hofzumahaus, Andreas and
                      Bohn, Birger and Brauers, Theo and Chang, Chih-Chung and
                      Fuchs, Hendrik and Häseler, Rolf and Holland, Frank and Hu,
                      Min and Kita, Kazuyuki and Kondo, Yutaka and Li, Xin and
                      Lou, Shengrong and Oebel, Andreas and Shao, Min and Zeng,
                      Limin and Zhu, Tong and Zhang, Yuanhang and Wahner, Andreas},
      title        = {{M}aximum efficiency in the hydroxyl-radical-based
                      self-cleansing of the troposphere},
      journal      = {Nature geoscience},
      volume       = {7},
      issn         = {1752-0908},
      address      = {London},
      publisher    = {Nature Publ. Group},
      reportid     = {FZJ-2014-03813},
      pages        = {559–563},
      year         = {2014},
      abstract     = {The removal of trace gases from the troposphere is, in most
                      cases, initialized by reactions with hydroxyl radicals, and
                      the products of these reactions are eventually deposited on
                      the Earth's surface. The concentration of these hydroxyl
                      radicals is therefore a measure of atmospheric
                      self-cleansing. In theory, hydroxyl-radical concentrations
                      can be enhanced by the recycling of some of the reaction
                      products. The only known efficient recycling process
                      involves nitrogen oxide and leads to production of ozone,
                      yet observations in regions with high hydrocarbon and low
                      nitrogen oxide concentrations show substantially elevated
                      hydroxyl-radical concentrations, up to ten times higher than
                      expected. If we normalize observed hydroxyl-radical
                      concentrations to the maximum achievable in model
                      calculations with variable nitrogen oxide concentrations,
                      this photochemical coordinate system uncovers a common
                      feature in almost all of these observations: even in the
                      presence of inadequate amounts of nitrogen oxides,
                      hydroxyl-radical concentrations are enhanced to the
                      theoretical maximum obtainable at very much higher nitrogen
                      oxide concentrations. This means that this important part of
                      the self-cleansing capability of the atmosphere is working
                      at maximum efficiency even in regions with a high burden of
                      biogenic hydrocarbons and low nitrogen oxide concentration.
                      Since these processes do not involve nitrogen oxides,
                      tropospheric ozone production is greatly reduced compared
                      with the expectation from current theory},
      month         = {Jul},
      date          = {2014-07-13},
      organization  = {, 13 Jul 2014},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {233 - Trace gas and aerosol processes in the troposphere
                      (POF2-233)},
      pid          = {G:(DE-HGF)POF2-233},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000341635100010},
      doi          = {10.1038/NGEO2199},
      url          = {https://juser.fz-juelich.de/record/154495},
}