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@ARTICLE{Roiger:17089,
      author       = {Roiger, A. and Schlager, H. and Schäfler, A. and
                      Huntrieser, H. and Scheibe, H. and Aufmhoff, H. and Cooper,
                      O. and Sodemann, H. and Stohl, A. and Burkhard, J. and
                      Lazarra, M. and Schiller, C. and Law, K.S. and Arnold, F.},
      title        = {{I}nsitu observation of {A}sian pollution transported in
                      the {A}rctic lowermost stratosphere},
      journal      = {Atmospheric chemistry and physics},
      volume       = {11},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {PreJuSER-17089},
      pages        = {10975 - 10994},
      year         = {2011},
      note         = {This work was supported by the Deutsche
                      Forschungsgemeinschaft (DFG) under SPP 1294 (SCHL1857/2-1)
                      and PAK 348 (SCHL1857/3-1). We thank the pilots, engineers
                      and scientists from the DLR flight department for their
                      excellent support during the campaign. Michael Lichtenstern
                      and Paul Stock are greatly acknowledged for their help in
                      acquiring this data set. We thank Gebhard Gunther
                      (FZ-Julich) and Andreas Dornbrack for helpful discussions.
                      Harald Sodemann and Andreas Stohl were funded by the
                      Norwegian Research Council in the framework of
                      POLARCAT-Norway. K. S. Law was supported by the
                      ANR/CNRS-INSU POLARCAT-France project. The Arctic composite
                      images were produced from geostationary and polar orbiting
                      satellite retrievals by the Space Science and Engineering
                      Center, University of Wisconsin-Madison (funded by the
                      Arctic Natural Science Program, Office of Polar Programs,
                      National Science Foundation Grant ARC-0713843). We
                      acknowledge the University of Wyoming for providing sounding
                      data to derive temperature profiles
                      (http://weather.uwyo.edu/upperair/sounding.html).},
      abstract     = {On a research flight on 10 July 2008, the German research
                      aircraft Falcon sampled an air mass with unusually high
                      carbon monoxide (CO), peroxyacetyl nitrate (PAN) and water
                      vapour (H2O) mixing ratios in the Arctic lowermost
                      stratosphere. The air mass was encountered twice at an
                      altitude of 11.3 km, similar to 800 m above the dynamical
                      tropopause. In-situ measurements of ozone, NO, and NOy
                      indicate that this layer was a mixed air mass containing
                      both air from the troposphere and stratosphere. Backward
                      trajectory and Lagrangian particle dispersion model analysis
                      suggest that the Falcon sampled the top of a polluted air
                      mass originating from the coastal regions of East Asia. The
                      anthropogenic pollution plume experienced strong uplift in a
                      warm conveyor belt (WCB) located over the Russian
                      east-coast. Subsequently the Asian air mass was transported
                      across the North Pole into the sampling area, elevating the
                      local tropopause by up to similar to 3 km. Mixing with
                      surrounding Arctic stratospheric air most likely took place
                      during the horizontal transport when the tropospheric
                      streamer was stretched into long and narrow filaments. The
                      mechanism illustrated in this study possibly presents an
                      important pathway to transport pollution into the polar
                      tropopause region.},
      keywords     = {J (WoSType)},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK491},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000296967900014},
      doi          = {10.5194/acp-11-10975-2011},
      url          = {https://juser.fz-juelich.de/record/17089},
}