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@ARTICLE{Tao:189318,
      author       = {Tao, M. and Konopka, P. and Ploeger, F. and Grooß, J.-U.
                      and Müller, R. and Volk, C. M. and Walker, K. A. and Riese,
                      M.},
      title        = {{I}mpact of the 2009 major stratospheric sudden warming on
                      the composition of the stratosphere},
      journal      = {Atmospheric chemistry and physics / Discussions},
      volume       = {15},
      number       = {4},
      issn         = {1680-7375},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2015-02496},
      pages        = {4383 - 4426},
      year         = {2015},
      note         = {Copernicus CCBY},
      abstract     = {In a case study of a remarkable Major stratospheric sudden
                      Warming (MW) during the boreal winter 2008/09, we
                      investigate how transport and mixing triggered by this event
                      affect the composition of the whole stratosphere in the
                      Northern Hemisphere. We simulate this event with the
                      Chemical Lagrangian Model of the Stratosphere (CLaMS), with
                      optimized mixing parameters and with no mixing, i.e. with
                      transport occurring only along the Lagrangian trajectories.
                      The results are investigated by using the tracer–tracer
                      correlation technique and by applying the Transformed
                      Eulerian Mean formalism. The CLaMS simulation of N2O and O3
                      with optimized mixing parameters shows good agreement with
                      the Aura Microwave Limb Sounder (MLS) data. The spatial
                      distribution of mixing intensity in CLaMS correlates fairly
                      well with the Eliassen–Palm flux convergence and
                      illustrates how planetary waves drive mixing. By comparing
                      the simulations with and without mixing, we find that after
                      the MW poleward transport of air increases not only across
                      the vortex edge but also across the subtropical transport
                      barrier. Moreover, the MW event also accelerates polar
                      descent and tropical ascent of the Brewer–Dobson
                      circulation. The accelerated ascent in the tropics and
                      descent at high latitudes firstly occurs in the upper
                      stratosphere and then propagates downward to the lower
                      stratosphere. This downward propagation takes over one month
                      from the potential temperature level of 1000 to 400 K.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.5194/acpd-15-4383-2015},
      url          = {https://juser.fz-juelich.de/record/189318},
}