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@ARTICLE{Roux:866845,
      author       = {Roux, F. and Clark, H. and Wang, K. Y. and Rohs, Susanne
                      and Sauvage, B. and Nedelec, P.},
      title        = {{I}nfluence of typhoons on atmospheric composition deduced
                      from {IAGOS} measurements over {T}aipei},
      journal      = {Atmospheric chemistry and physics},
      volume       = {20},
      number       = {6},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2019-05908},
      pages        = {3945 - 3963},
      year         = {2019},
      abstract     = {The research infrastructure IAGOS (In-Service Aircraft for
                      a Global Observing System) equips commercial aircraft with
                      instruments to monitor the composition of the atmosphere
                      during flights around the world. In this article, we use
                      data from two China Airlines aircraft based in Taipei
                      (Taiwan) which provided daily measurements of ozone, carbon
                      monoxide and water vapour throughout the summer of 2016. We
                      present time series, from the surface to the upper
                      troposphere, of ozone, carbon monoxide and relative humidity
                      near Taipei, focusing on periods influenced by the passage
                      of typhoons. We examine landing and take-off profiles in the
                      vicinity of tropical cyclones using ERA-5 reanalyses to
                      elucidate the origin of the anomalies in the vertical
                      distribution of these chemical species.Results indicate a
                      high ozone content in the upper- to middle-troposphere track
                      of the storms. The high ozone mixing ratios are generally
                      correlated with potential vorticity and anti-correlated with
                      relative humidity, suggesting stratospheric origin. These
                      results suggest that tropical cyclones participate in
                      transporting air from the stratosphere to troposphere and
                      that such transport could be a regular feature of typhoons.
                      After the typhoons passed Taiwan, the tropospheric column
                      was filled with substantially lower ozone mixing ratios due
                      to the rapid uplift of marine boundary layer air. At the
                      same time, the relative humidity increased, and carbon
                      monoxide mixing ratios fell. Locally, therefore, the passage
                      of typhoons has a positive effect on air quality at the
                      surface, cleansing the atmosphere and reducing the mixing
                      ratios of pollutants such as CO and O3.},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243)},
      pid          = {G:(DE-HGF)POF3-243},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000522877200001},
      doi          = {10.5194/acp-20-3945-2020},
      url          = {https://juser.fz-juelich.de/record/866845},
}