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@ARTICLE{Groo:893262,
      author       = {Grooß, Jens-Uwe and Müller, Rolf},
      title        = {{S}imulation of {R}ecord {A}rctic {S}tratospheric {O}zone
                      {D}epletion in 2020},
      journal      = {Journal of geophysical research / D},
      volume       = {126},
      number       = {12},
      issn         = {2169-8996},
      address      = {Hoboken, NJ},
      publisher    = {Wiley},
      reportid     = {FZJ-2021-02652},
      pages        = {e2020JD033339},
      year         = {2021},
      abstract     = {In the Arctic winter/spring of 2019/2020, stratospheric
                      temperatures were exceptionally low until early April and
                      the polar vortex was very stable. As a consequence,
                      significant chemical ozone depletion occurred in the Arctic
                      polar vortex in spring 2020. Here, we present simulations
                      using the Chemical Lagrangian Model of the Stratosphere that
                      address the development of chlorine compounds and ozone in
                      the Arctic stratosphere in 2020. The simulation reproduces
                      relevant observations of ozone and chlorine compounds, as
                      shown by comparisons with data from the Microwave Limb
                      Sounder, Atmospheric Chemistry Experiment-Fourier Transform
                      Spectrometer, balloon-borne ozone sondes, and the Ozone
                      Monitoring Instrument. Although the concentration of
                      chlorine and bromine compounds in the polar stratosphere has
                      decreased by more than $10\%$ compared to peak values around
                      the year 2000, the meteorological conditions in
                      winter/spring 2019/2020 caused unprecedented ozone
                      depletion. The lowest simulated ozone mixing ratio was about
                      40 ppbv. Because extremely low ozone mixing ratios were
                      reached in the lower polar stratosphere, chlorine
                      deactivation into HCl occurred as is normally observed in
                      the Antarctic polar vortex. The depletion in partial column
                      ozone in the lower stratosphere (potential temperature from
                      350 to 600 K, corresponding to about 12–24 km) in the
                      vortex core was calculated to reach 143 Dobson Units, which
                      is more than the ozone loss in 2011 and 2016, the years
                      which —until 2020— had seen the largest Arctic ozone
                      depletion on record.},
      cin          = {IEK-7 / JARA-HPC / NIC},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013 / $I:(DE-82)080012_20140620$ /
                      I:(DE-Juel1)NIC-20090406},
      pnm          = {211 - Die Atmosphäre im globalen Wandel (POF4-211) /
                      Chemisches Lagrangesches Modell der Stratosphäre (CLaMS)
                      $(jicg11_20190501)$},
      pid          = {G:(DE-HGF)POF4-211 / $G:(DE-Juel1)jicg11_20190501$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000667250900005},
      doi          = {10.1029/2020JD033339},
      url          = {https://juser.fz-juelich.de/record/893262},
}