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@ARTICLE{Kalabokas:276193,
      author       = {Kalabokas, Pavlos D. and Thouret, Valerie and Cammas,
                      Jean-Pierre and Volz-Thomas, Andreas and Boulanger, Damien
                      and Repapis, Christos C.},
      title        = {{T}he geographical distribution of meteorological
                      parameters associated with high and low summer ozone levels
                      in the lower troposphere and the boundary layer over the
                      eastern {M}editerranean ({C}airo case)},
      journal      = {Tellus / B},
      volume       = {67},
      number       = {0},
      issn         = {1600-0889},
      address      = {Stockholm},
      publisher    = {Inst.},
      reportid     = {FZJ-2015-06658},
      pages        = {27853, 1-24},
      year         = {2015},
      abstract     = {In continuation of previous research for evaluation of the
                      high ozone levels observed during summer time over the
                      eastern Mediterranean, MOZAIC profiles collected at the
                      airport of Cairo from 1994 to 2008 are analysed. Average
                      profiles corresponding, respectively, to the highest and the
                      lowest ozone mixing ratios for the 0–1.5 km layer over
                      Cairo in summer (JJA) (94 profiles) are examined along with
                      their corresponding composite maps of geopotential height
                      (and anomalies), vertical velocity (and anomalies), specific
                      humidity anomalies, precipitable water anomalies, air
                      temperature anomalies and wind speed at 850 hPa. In
                      addition, backward trajectories arriving in the boundary
                      layer over Cairo during the days with highest or lowest
                      ozone mixing ratios are examined. During the $7\%$ highest
                      ozone days at the 0–1500 m layer over Cairo, very high
                      ozone concentrations of about 80 ppb on average are observed
                      from the surface up to 4–5 km altitude. The difference in
                      ozone concentrations between the $7\%$ highest and the $7\%$
                      lowest ozone days reaches maximum values around 60 ppb close
                      to the ground. During the highest ozone days for both
                      1.5–5 and 0–1.5 km layer, there are extended regions of
                      strong subsidence in the eastern Mediterranean but also in
                      eastern and northern Europe and over these regions the
                      atmosphere is dryer than average. In addition,
                      characteristic profiles with the highest ozone
                      concentrations in the 0–1500 m layer are examined in order
                      to assess the influence of atmospheric transport and
                      photochemistry on the ozone concentrations over the area.},
      organization  = {MOZAIC-IAGOS 20th Anniversary
                       Symposium,},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243) / IAGOS-D - In-Service
                      Aircraft for a Global Observing System – German
                      Contribution to the Main Phase of IAGOS
                      (BMBF-20180331-IAGOSD)},
      pid          = {G:(DE-HGF)POF3-243 / G:(DE-82)BMBF-20180331-IAGOSD},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000361745900001},
      doi          = {10.3402/tellusb.v67.27853},
      url          = {https://juser.fz-juelich.de/record/276193},
}