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@ARTICLE{DiLiberto:187233,
      author       = {Di Liberto, L. and Lehmann, R and Tritscher, I. and Fierli,
                      F. and Mercer, J. L. and Snels, M. and Di Donfrancesco, G.
                      and Deshler, T. and Luo, B. P. and Grooss, Jens-Uwe and
                      Arnone, E. and Dinelli, B. M. and Cairo, F.},
      title        = {{L}agrangian analysis of microphysical and chemical
                      processes in the {A}ntarctic stratosphere: a case study},
      journal      = {Atmospheric chemistry and physics / Discussions},
      volume       = {14},
      number       = {23},
      issn         = {1680-7375},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2015-00906},
      pages        = {32629 - 32665},
      year         = {2014},
      abstract     = {We investigated chemical and microphysical processes in the
                      late winter in the Antarctic lower stratosphere, after the
                      first chlorine activation and initial ozone depletion. We
                      focused on a time interval when both further chlorine
                      activation and ozone loss, but also chlorine deactivation,
                      occur.We performed a comprehensive Lagrangian analysis to
                      simulate the evolution of an airmass along a ten-day
                      trajectory, coupling a detailed microphysical box model with
                      a chemistry model. Model results have been compared with
                      in-situ and remote sensing measurements of particles and
                      ozone at the start and end points of the trajectory, and
                      satellite measurements of key chemical species and clouds
                      along it.Different model runs have been performed to
                      understand the relative role of solid and liquid Polar
                      Stratospheric Cloud (PSC) particles for the heterogeneous
                      chemistry, and for the denitrification caused by particle
                      sedimentation. According to model results, under the
                      conditions investigated, ozone depletion is not affected
                      significantly by the presence of Nitric Acid Trihydrate
                      (NAT) particles, as the observed depletion rate can equally
                      well be reproduced by heterogeneous chemistry on cold liquid
                      aerosol, with a surface area density close to background
                      values.Under the conditions investigated, the impact of
                      denitrification is important for the abundances of chlorine
                      reservoirs after PSC evaporation, thus stressing the need of
                      using appropriate microphysical models in the simulation of
                      chlorine deactivation. Conversely, we found that the effect
                      of particle sedimentation and denitrification on the amount
                      of ozone depletion is rather small in the case investigated.
                      In the first part of the analysed period, when a PSC was
                      present in the airmass, sedimentation led to smaller
                      available particle surface area and less chlorine
                      activation, and thus less ozone depletion. After the PSC
                      evaporation, in the last three days of the simulation,
                      denitrification increases ozone loss by hampering chlorine
                      deactivation.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {234 - Composition and Dynamics of the Upper Troposphere and
                      Stratosphere (POF2-234)},
      pid          = {G:(DE-HGF)POF2-234},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.5194/acpd-14-32629-2014},
      url          = {https://juser.fz-juelich.de/record/187233},
}