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@ARTICLE{Mangold:7561,
      author       = {Mangold, A. and Grooß, J.-U. and de Backer, H. and Kirner,
                      O. and Ruhnke, R. and Müller, R.},
      title        = {{A} model study of the {J}anuary 2006 low total ozone
                      episode over {W}estern {E}urope and comparison with ozone
                      sonde data},
      journal      = {Atmospheric chemistry and physics},
      volume       = {9},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {PreJuSER-7561},
      pages        = {6429 - 6451},
      year         = {2009},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Total column and stratospheric ozone levels at
                      mid-latitudes often reveal strong fluctuations on time
                      scales of days caused by dynamic processes. In some cases
                      the total ozone column is distinctly reduced below
                      climatological values. Here, a very low total ozone episode
                      around 19 January 2006 over Western Europe is investigated
                      when the observed total ozone column over Uccle (BE),
                      measured by a Brewer spectrophotometer, reached a daily
                      minimum of 200 DU, the lowest recorded value at this
                      station. In order to investigate the mechanisms leading to
                      the ozone minimum, the present study used data from (i) six
                      ozone sounding stations in Western and Middle Europe, (ii)
                      ECMWF meteorological fields, (iii) a simulation of the CLaMS
                      model for January 2006, (iv) a multi-year run of the
                      chemistry transport model KASIMA, and (v) a six-year run of
                      the climate chemistry model ECHAM5/MESSy1. The ozone
                      decrease at different heights was quantified and it was
                      determined to what extent different transport mechanisms,
                      and instantaneous, in-situ chemical ozone depletion
                      contributed to the event. All three models reproduced the
                      evolution and formation of the event. The ozone column
                      decrease between Theta=300 and 750K was strongest at Uccle
                      (BE) and De Bilt (NL) with 108 and 103 DU, respectively, and
                      somewhat lower at Hohenpeissenberg (DE), Payerne (CH),
                      Prague (CZ) and Lerwick (UK) with 85, 84, 83 and 74 DU,
                      respectively. This analysis demonstrated that mainly the
                      displacement of the ozone depleted polar vortex contributed
                      to the ozone column decrease. Advection of ozone-poor
                      low-latitude air masses was important in the UTLS region.
                      The vertical displacement of isentropes connected with
                      divergence of air out of the column was found to be of minor
                      importance compared to the horizontal transport processes.
                      Severe low total ozone episodes seem to occur when the
                      mentioned mechanisms are superimposed. Instantaneous,
                      in-situ chemical ozone depletion accounted for only
                      $2+/-1\%$ of the overall total ozone decrease at the
                      sounding stations.},
      keywords     = {J (WoSType)},
      cin          = {ICG-1},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB790},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000269778500011},
      url          = {https://juser.fz-juelich.de/record/7561},
}