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@ARTICLE{Rolf:256589,
      author       = {Rolf, C. and Afchine, A. and Bozem, H. and Buchholz, B. and
                      Ebert, V. and Guggenmoser, T. and Hoor, P. and Konopka, P.
                      and Kretschmer, E. and Müller, S. and Schlager, H. and
                      Spelten, N. and Sumińska-Ebersoldt, O. and Ungermann, Jörn
                      and Zahn, A. and Krämer, M.},
      title        = {{T}ransport of {A}ntarctic stratospheric strongly
                      dehydrated air into the troposphere observed during the
                      {HALO}-{ESMV}al campaign 2012},
      journal      = {Atmospheric chemistry and physics},
      volume       = {15},
      number       = {16},
      issn         = {1680-7324},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2015-06463},
      pages        = {9143 - 9158},
      year         = {2015},
      abstract     = {Dehydration in the Antarctic winter stratosphere is a
                      well-known phenomenon that is annually observed by
                      satellites and occasionally observed by balloon-borne
                      measurements. However, in situ measurements of dehydrated
                      air masses in the Antarctic vortex are very rare. Here, we
                      present detailed observations with the in situ and GLORIA
                      remote sensing instrument payload aboard the German aircraft
                      HALO. Strongly dehydrated air masses down to 1.6 ppmv of
                      water vapor were observed as far north as 47° S in an
                      altitude between 12 and 13 km in the lowermost stratosphere.
                      The dehydration can be traced back to individual ice
                      formation events above the Antarctic Peninsula and Plateau,
                      where ice crystals sedimented out and water vapor was
                      irreversibly removed. Within these dehydrated stratospheric
                      air masses, filaments of moister air reaching down to the
                      tropopause are detected with the high-resolution limb
                      sounder, GLORIA. Furthermore, dehydrated air masses are
                      observed with GLORIA in the Antarctic lowermost stratosphere
                      down to 7 km. With the help of a backward trajectory
                      analysis, a midlatitude origin of the moist filaments in the
                      vortex can be identified, while the dry air masses down to 7
                      km have stratospheric origins. Antarctic
                      stratosphere–troposphere exchange (STE) and transport of
                      dehydrated air masses into the troposphere are investigated.
                      Further, it is shown that the exchange process can be
                      attributed to several successive Rossby wave events in
                      combination with an isentropic exchange of air masses across
                      the thermal tropopause. The transport into the troposphere
                      is caused by air masses that are detached from the potential
                      vorticity (PV) structure by Rossby wave breaking events and
                      subsequently transported diabatically across the dynamical
                      tropopause. Once transported to the troposphere, air masses
                      with stratospheric origin can reach near-surface levels
                      within several days.},
      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:000360646500004},
      doi          = {10.5194/acp-15-9143-2015},
      url          = {https://juser.fz-juelich.de/record/256589},
}