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@ARTICLE{li:829467,
      author       = {li, dan and Vogel, Bärbel and Bian, J. and Müller, Rolf
                      and Pan, L. L. and Günther, Gebhard and Bai, Z. and Li, Q.
                      and Zhang, J. and Fan, Q. and Vömel, H.},
      title        = {{I}mpact of typhoons on the composition of the upper
                      troposphere within the {A}sian summer monsoon anticyclone:
                      the {SWOP} campaign in {L}hasa 2013},
      journal      = {Atmospheric chemistry and physics},
      volume       = {17},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2017-03166},
      pages        = {4657-4672},
      year         = {2017},
      abstract     = {In the frame of the SWOP (sounding water vapour, ozone, and
                      particle) campaign during the Asian summer monsoon (ASM),
                      ozone and water vapour profiles were measured by
                      balloon-borne sensors launched from Lhasa (29.66° N,
                      91.14° E, elevation 3650 m), China, in August 2013. In
                      total, 24 soundings were launched, nearly half of which show
                      strong variations in the relationship between ozone and
                      water vapour in the tracer–tracer correlation in the upper
                      troposphere and lower stratosphere (UTLS). For each
                      sounding, 20-day backward trajectories were calculated using
                      the trajectory module of the Chemical Lagrangian Model of
                      the Stratosphere (CLaMS) to analyse these variations. The
                      trajectory calculations demonstrate that three tropical
                      cyclones (tropical storm Jebi, typhoons Utor and Trami),
                      which occurred over the western Pacific Ocean during August
                      2013, had a considerable impact on the vertical distribution
                      of ozone and water vapour by uplifting marine air masses to
                      altitudes of the ASM anticyclone. Air parcels subsequently
                      arrived at the observation site via two primary pathways:
                      firstly via direct horizontal transport from the location of
                      the typhoon to the station within approximately 3 days, and
                      secondly via transport following the clockwise wind flow of
                      the ASM within a timescale of 1 week. Furthermore, the
                      interplay between the spatial position of the ASM
                      anticyclone and tropical cyclones plays a key role in
                      controlling the transport pathways of air parcels from the
                      boundary layer of the western Pacific to Lhasa in horizontal
                      and vertical transport. Moreover, the statistical analysis
                      shows that the strongest impact by typhoons is found at
                      altitudes between 14.5 and 17 km (365–375 K). Low
                      ozone values (50–80 ppbv) were observed between 370 and
                      380 K due to the strong vertical transport within tropical
                      cyclones.},
      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:000399405000001},
      doi          = {10.5194/acp-17-4657-2017},
      url          = {https://juser.fz-juelich.de/record/829467},
}