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@ARTICLE{Tilmes:54533,
      author       = {Tilmes, S. and Müller, R. and Grooß, J.-U. and Nakajima,
                      H. and Sasano, Y.},
      title        = {{D}evelopment of tracer relations and chemical ozone loss
                      during the setup phase of the polar vortex},
      journal      = {Journal of Geophysical Research},
      volume       = {111},
      issn         = {0148-0227},
      address      = {Washington, DC},
      publisher    = {Union},
      reportid     = {PreJuSER-54533},
      pages        = {D24S90},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {[1] The development of tracer-tracer relations in the polar
                      stratosphere is analyzed during the period when the vortex
                      forms and a westerly circulation develops after polar summer
                      (the setup phase of the polar vortex). We consider high
                      southern latitudes from March to June for winter 1997 and
                      2003 and high northern latitudes from September to October
                      2003. ILAS and ILAS-II satellite observations and model
                      simulations are used to investigate chemical changes in O-3,
                      NO2 and HNO3 during these periods. Tracer-tracer relations
                      and meteorological analyses consistently indicate a
                      separation of the incipient polar vortex into two parts. The
                      area within the edge of the inner vortex is isolated from
                      the outer part that is still influenced by mixing with air
                      of midlatitude origin. In the Antarctic in April, ozone
                      concentrations vary by about 0.5 ppmv within the isolated
                      inner vortex between 500 and 600 K potential temperature.
                      This inhomogeneous distribution of ozone is likewise obvious
                      in MIPAS satellite measurements. Box model simulations
                      explain that the low ozone concentrations in April are
                      caused by chemical ozone loss due to catalytic cycles which
                      are mainly driven by NOx at this time of the year. The
                      simulations also explain the observed conversion of NOx to
                      HNO3 during the setup phase of the 2003 Antarctic vortex.
                      During June in the Antarctic, the internal vortex transport
                      barrier disappears and ozone mixing ratios become
                      homogeneous throughout the entire vortex. At that time, no
                      further ozone loss occurs because of the lack of sunlight.},
      keywords     = {J (WoSType)},
      cin          = {ICG-I},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB47},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000243106900001},
      doi          = {10.1029/2005JD006726},
      url          = {https://juser.fz-juelich.de/record/54533},
}