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@ARTICLE{Orr:154412,
      author       = {Orr, A. and Hosking, J. S. and Hoffmann, L. and Keeble, J.
                      and Dean, S. M. and Roscoe, H. K. and Abraham, N. L. and
                      Vosper, S. and Braesicke, P.},
      title        = {{I}nclusion of mountain wave-induced cooling for the
                      formation of {PSC}s over the {A}ntarctic {P}eninsula in a
                      chemistry–climate model},
      journal      = {Atmospheric chemistry and physics / Discussions},
      volume       = {14},
      number       = {12},
      issn         = {1680-7375},
      reportid     = {FZJ-2014-03759},
      pages        = {18277 - 18314},
      year         = {2014},
      abstract     = {An important source of polar stratospheric clouds (PSCs),
                      which play a crucial role in controlling polar stratospheric
                      ozone depletion, is from the temperature fluctuations
                      induced by mountain waves. However, this formation mechanism
                      is usually missing in chemistry–climate models because
                      these temperature fluctuations are neither resolved nor
                      parameterised. Here, we investigate the representation of
                      stratospheric mountain wave-induced temperature fluctuations
                      by the UK Met Office Unified Model (UM) at high and low
                      spatial resolution against Atmospheric Infrared Sounder
                      satellite observations for three case studies over the
                      Antarctic Peninsula. At a high horizontal resolution (4 km)
                      the mesoscale configuration of the UM correctly simulates
                      the magnitude, timing, and location of the measured
                      temperature fluctuations. By comparison, at a low horizontal
                      resolution (2.5° × 3.75°) the climate configuration fails
                      to resolve such disturbances. However, it is demonstrated
                      that the temperature fluctuations computed by a mountain
                      wave parameterisation scheme inserted into the climate
                      configuration (which computes the temperature fluctuations
                      due to unresolved mountain waves) are in excellent agreement
                      with the mesoscale configuration responses. The
                      parameterisation was subsequently used to compute the local
                      mountain wave-induced cooling phases in the
                      chemistry–climate configuration of the UM. This increased
                      stratospheric cooling was passed to the PSC scheme of the
                      chemistry–climate model, and caused a $30–50\%$ increase
                      in PSC surface area density over the Antarctic Peninsula
                      compared to a 30 year control simulation.},
      cin          = {JSC},
      ddc          = {550},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {411 - Computational Science and Mathematical Methods
                      (POF2-411)},
      pid          = {G:(DE-HGF)POF2-411},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.5194/acpd-14-18277-2014},
      url          = {https://juser.fz-juelich.de/record/154412},
}