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@ARTICLE{Mller:820665,
      author       = {Müller, Stefan and Hoor, Peter and Bozem, Heiko and Gute,
                      Ellen and Vogel, Bärbel and Zahn, Andreas and Bönisch,
                      Harald and Keber, Timo and Krämer, Martina and Rolf,
                      Christian and Riese, Martin and Schlager, Hans and Engel,
                      Andreas},
      title        = {{I}mpact of the {A}sian monsoon on the extratropical lower
                      stratosphere: trace gas observations during {TACTS} over
                      {E}urope 2012},
      journal      = {Atmospheric chemistry and physics},
      volume       = {16},
      number       = {16},
      issn         = {1680-7324},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2016-05934},
      pages        = {10573 - 10589},
      year         = {2016},
      abstract     = {The transport of air masses originating from the Asian
                      monsoon anticyclone into the extratropical upper troposphere
                      and lower stratosphere (Ex-UTLS) above potential
                      temperatures Θ =  380 K was identified during the
                      HALO aircraft mission TACTS in August and September 2012. In
                      situ measurements of CO, O3 and N2O during TACTS flight 2 on
                      30 August 2012 show the irreversible mixing of aged
                      stratospheric air masses with younger (recently transported
                      from the troposphere) ones within the Ex-UTLS. Backward
                      trajectories calculated with the trajectory module of CLaMS
                      indicate that these tropospherically affected air masses
                      originate from the Asian monsoon anticyclone. These air
                      masses are subsequently transported above potential
                      temperatures Θ =  380 K from the monsoon
                      circulation region into the Ex-UTLS, where they subsequently
                      mix with stratospheric air masses. The overall trace gas
                      distribution measured during TACTS shows that this transport
                      pathway had affected the chemical composition of the Ex-UTLS
                      during boreal summer and autumn 2012. This leads to an
                      intensification of the tropospheric influence on the
                      extratropical lower stratosphere with PV  >  8 pvu
                      within 3 weeks during the TACTS mission. During the same
                      time period a weakening of the tropospheric influence on the
                      lowermost stratosphere (LMS) is determined. The study shows
                      that the transport of air masses originating from the Asian
                      summer monsoon region within the lower stratosphere affects
                      the change in the chemical composition of the Ex-UTLS over
                      Europe and thus contributes to the flushing of the LMS
                      during summer 2012.},
      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:000383743000001},
      doi          = {10.5194/acp-16-10573-2016},
      url          = {https://juser.fz-juelich.de/record/820665},
}