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@ARTICLE{Tritscher:891784,
      author       = {Tritscher, I. and Pitts, M. C. and Poole, L. R. and
                      Alexander, S. P. and Cairo, F. and Chipperfield, M. P. and
                      Grooß, J.-U. and Höpfner, M. and Lambert, A. and Luo, B.
                      P. and Molleker, S. and Orr, A. and Salawitch, R. and Snels,
                      M. and Spang, R. and Woiwode, W. and Peter, T.},
      title        = {{P}olar {S}tratospheric {C}louds: {S}atellite
                      {O}bservations, {P}rocesses, and {R}ole in {O}zone
                      {D}epletion},
      journal      = {Reviews of geophysics},
      volume       = {59},
      number       = {2},
      issn         = {0034-6853},
      address      = {Hoboken, NJ},
      publisher    = {Wiley},
      reportid     = {FZJ-2021-01731},
      pages        = {e2020RG000702},
      year         = {2021},
      abstract     = {Polar stratospheric clouds (PSCs) play important roles in
                      stratospheric ozone depletion during winter and spring at
                      high latitudes (e.g., the Antarctic ozone hole). PSC
                      particles provide sites for heterogeneous reactions that
                      convert stable chlorine reservoir species to radicals that
                      destroy ozone catalytically. PSCs also prolong ozone
                      depletion by delaying chlorine deactivation through the
                      removal of gas-phase HNO3 and H2O by sedimentation of large
                      nitric acid trihydrate (NAT) and ice particles. Contemporary
                      observations by the spaceborne instruments Michelson
                      Interferometer for Passive Atmospheric Sounding (MIPAS),
                      Microwave Limb Sounder (MLS), and Cloud-Aerosol Lidar with
                      Orthogonal Polarization (CALIOP) have provided an
                      unprecedented polar vortex-wide climatological view of PSC
                      occurrence and composition in both hemispheres. These data
                      have spurred advances in our understanding of PSC formation
                      and related dynamical processes, especially the firm
                      evidence of widespread heterogeneous nucleation of both NAT
                      and ice PSC particles, perhaps on nuclei of meteoritic
                      origin. Heterogeneous chlorine activation appears to be well
                      understood. Reaction coefficients on/in liquid droplets have
                      been measured accurately, and while uncertainties remain for
                      reactions on solid NAT and ice particles, they are
                      considered relatively unimportant since under most
                      conditions chlorine activation occurs on/in liquid droplets.
                      There have been notable advances in the ability of chemical
                      transport and chemistry-climate models to reproduce PSC
                      temporal/spatial distributions and composition observed from
                      space. Continued spaceborne PSC observations will facilitate
                      further improvements in the representation of PSC processes
                      in global models and enable more accurate projections of the
                      evolution of polar ozone and the global ozone layer as
                      climate changes.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {211 - Die Atmosphäre im globalen Wandel (POF4-211) / DFG
                      project 310479827 - Stratosphärische Wasserdampf
                      Simulationen: Von den Polarregionen zur Tropischen
                      Tropopause},
      pid          = {G:(DE-HGF)POF4-211 / G:(GEPRIS)310479827},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000667476800006},
      doi          = {10.1029/2020RG000702},
      url          = {https://juser.fz-juelich.de/record/891784},
}