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@ARTICLE{Li:890773,
      author       = {Li, Dan and Vogel, Bärbel and Müller, Rolf and Bian,
                      Jianchun and Günther, Gebhard and Riese, Martin},
      title        = {{T}ropical {C}yclones {R}educe {O}zone in the {T}ropopause
                      {R}egion {O}ver the {W}estern {P}acific: {A}n {A}nalysis of
                      18 {Y}ears {O}zonesonde {P}rofiles},
      journal      = {Earth's future},
      volume       = {9},
      number       = {2},
      issn         = {2328-4277},
      address      = {Hoboken, NJ},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2021-01189},
      pages        = {e2020EF001635},
      year         = {2021},
      abstract     = {Typhoons play a key role in causing low ozone
                      concentrations in the upper troposphere and lower
                      stratosphere (UTLS) over the western Pacific. In this study,
                      18 years records (2000–2017) of balloon‐borne ozone
                      measurements in Hong Kong (22.3°N, 114.2°E) and Naha
                      (26.2°N, 127.7°E) are combined with trajectory
                      calculations to quantitatively assess the impact of western
                      Pacific typhoons on ozone in the UTLS. The results show that
                      $46.3\%$ $(44.9\%)$ of the ozone profiles in Hong Kong
                      (Naha) are impacted by western Pacific typhoons from July to
                      October, with negative ozone anomalies exceeding $−20\%.$
                      Vertical transport by intense typhoons affects $16.8\%$
                      $(18.8\%)$ of the ozone profiles in Hong Kong (Naha) with
                      even larger negative anomalies $(<−40\%).$ Vertical
                      transport of tropical cyclones reduces ozone by about
                      20–60 ppbv compared to the mean ozone profile near the
                      tropopause. Ozone values below 60 ppbv in the upper
                      troposphere in Hong Kong and Naha are mainly caused by the
                      uplift in the western Pacific typhoons and by horizontal
                      transport within the Asian summer monsoon (ASM) anticyclone.
                      The horizontal transport in the ASM anticyclone has larger
                      contributions to the low ozone values measured over Hong
                      Kong than over Naha.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {211 - Die Atmosphäre im globalen Wandel (POF4-211)},
      pid          = {G:(DE-HGF)POF4-211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000623816500008},
      doi          = {10.1029/2020EF001635},
      url          = {https://juser.fz-juelich.de/record/890773},
}