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@ARTICLE{li:825091,
      author       = {li, dan and Vogel, Bärbel and Bian, Jianchun and Müller,
                      Rolf and Pan, Laura L. and Günther, Gebhard and Bai,
                      Zhixuan and Li, Qian and Zhang, Jinqiang and Fan, Qiujun and
                      Vömel, Holger},
      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 / Discussions},
      volume       = {},
      issn         = {1680-7375},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2016-07568},
      pages        = {},
      year         = {2016},
      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
                      some strong variations in the relationship between ozone and
                      water vapour in the tracer-tracer correlation in the upper
                      troposphere and lower stratosphere (UTLS). 20-day backward
                      trajectories of each sounding 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 three days,
                      and secondly via rotational subsidence, during which air
                      parcels descend slowly along a circle following the
                      anticyclone flow within a timescale of one 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 as well as vertical transport. Moreover, the
                      statistical analysis shows that the strongest impact by
                      typhoons is found at altitudes between 14.5 km and 17 km
                      (365–375 K). Low ozone values (50–80 ppbv) were
                      observed between 370 K 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},
      doi          = {10.5194/acp-2016-875},
      url          = {https://juser.fz-juelich.de/record/825091},
}