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@ARTICLE{Oelhaf:873591,
      author       = {Oelhaf, Hermann and Sinnhuber, Björn-Martin and Woiwode,
                      Wolfgang and Bönisch, Harald and Bozem, Heiko and Engel,
                      Andreas and Fix, Andreas and Friedl-Vallon, Felix and
                      Grooß, Jens-Uwe and Hoor, Peter and Johansson, Sören and
                      Jurkat-Witschas, Tina and Kaufmann, Stefan and Krämer,
                      Martina and Krause, Jens and Kretschmer, Erik and Lörks,
                      Dominique and Marsing, Andreas and Orphal, Johannes and
                      Pfeilsticker, Klaus and Pitts, Michael and Poole, Lamont and
                      Preusse, Peter and Rapp, Markus and Riese, Martin and Rolf,
                      Christian and Ungermann, Jörn and Voigt, Christiane and
                      Volk, C. Michael and Wirth, Martin and Zahn, Andreas and
                      Ziereis, Helmut},
      title        = {{POLSTRACC}: {A}irborne {E}xperiment for {S}tudying the
                      {P}olar {S}tratosphere in a {C}hanging {C}limate with the
                      {H}igh {A}ltitude and {L}ong {R}ange {R}esearch {A}ircraft
                      ({HALO})},
      journal      = {Bulletin of the American Meteorological Society},
      volume       = {100},
      number       = {12},
      issn         = {1520-0477},
      address      = {Boston, Mass.},
      publisher    = {ASM},
      reportid     = {FZJ-2020-00834},
      pages        = {2634 - 2664},
      year         = {2019},
      abstract     = {The Polar Stratosphere in a Changing Climate (POLSTRACC)
                      mission employed the German High Altitude and Long Range
                      Research Aircraft (HALO). The payload comprised an
                      innovative combination of remote sensing and in situ
                      instruments. The in situ instruments provided
                      high-resolution observations of cirrus and polar
                      stratospheric clouds (PSCs), a large number of reactive and
                      long-lived trace gases, and temperature at the aircraft
                      level. Information above and underneath the aircraft level
                      was achieved by remote sensing instruments as well as
                      dropsondes. The mission took place from 8 December 2015 to
                      18 March 2016, covering the extremely cold late December to
                      early February period and the time around the major warming
                      in the beginning of March. In 18 scientific deployments, 156
                      flight hours were conducted, covering latitudes from 25° to
                      87°N and maximum altitudes of almost 15 km, and reaching
                      potential temperature levels of up to 410 K. Highlights of
                      results include 1) new aspects of transport and mixing in
                      the Arctic upper troposphere–lower stratosphere (UTLS), 2)
                      detailed analyses of special dynamical features such as
                      tropopause folds, 3) observations of extended PSCs reaching
                      sometimes down to HALO flight levels at 13–14 km, 4)
                      observations of particulate NOy and vertical redistribution
                      of gas-phase NOy in the lowermost stratosphere (LMS), 5)
                      significant chlorine activation and deactivation in the LMS
                      along with halogen source gas observations, and 6) the
                      partitioning and budgets of reactive chlorine and bromine
                      along with a detailed study of the efficiency of ClOx/BrOx
                      ozone loss cycle. Finally, we quantify—based on our
                      results—the ozone loss in the 2015/16 winter and address
                      the question of how extraordinary this Arctic winter was.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {244 - Composition and dynamics of the upper troposphere and
                      middle atmosphere (POF3-244)},
      pid          = {G:(DE-HGF)POF3-244},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000506029100023},
      doi          = {10.1175/BAMS-D-18-0181.1},
      url          = {https://juser.fz-juelich.de/record/873591},
}