% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Mller:60211,
      author       = {Müller, R. and Grooß, J.-U. and Lemmen, C. and Heinze, D.
                      and Dameris, M. and Bodeker, G.},
      title        = {{S}imple measures of ozone depletion in the polar
                      stratosphere},
      journal      = {Atmospheric chemistry and physics},
      volume       = {8},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {PreJuSER-60211},
      pages        = {251 - 264},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We investigate the extent to which quantities that are
                      based on total column ozone are applicable as measures of
                      ozone loss in the polar vortices. Such quantities have been
                      used frequently in ozone assessments by the World
                      Meteorological Organization (WMO) and also to assess the
                      performance of chemistry-climate models. The most commonly
                      considered quantities are March and October mean column
                      ozone poleward of geometric latitude 63 degrees and the
                      spring minimum of daily total ozone minima poleward of a
                      given latitude. Particularly in the Arctic, the former
                      measure is affected by vortex variability and vortex
                      break-up in spring. The minimum of daily total ozone minima
                      poleward of a particular latitude is debatable, insofar as
                      it relies on one single measurement or model grid point. We
                      find that, for Arctic conditions, this minimum value often
                      occurs in air outside the polar vortex, both in the
                      observations and in a chemistry-climate model. Neither of
                      the two measures shows a good correlation with chemical
                      ozone loss in the vortex deduced from observations. We
                      recommend that the minimum of daily minima should no longer
                      be used when comparing polar ozone loss in observations and
                      models. As an alternative to the March and October mean
                      column polar ozone we suggest considering the minimum of
                      daily average total ozone poleward of 63 degrees equivalent
                      latitude in spring (except for winters with an early vortex
                      break-up). Such a definition both obviates relying on one
                      single data point and reduces the impact of year-to-year
                      variability in the Arctic vortex break-up on ozone loss
                      measures. Further, this measure shows a reasonable
                      correlation (r = -0.75) with observed chemical ozone loss.
                      Nonetheless, simple measures of polar ozone loss must be
                      used with caution; if possible, it is preferable to use more
                      sophisticated measures that include additional information
                      to disentangle the impact of transport and chemistry on
                      ozone.},
      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:000253908100005},
      doi          = {10.5194/acp-8-251-2008},
      url          = {https://juser.fz-juelich.de/record/60211},
}