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@ARTICLE{Fierli:13903,
      author       = {Fierli, F. and Orlandi, E. and Law, K.S. and Cagnazzo, c.
                      and Borrmann, S. and Cairo, F. and Schiller, C. and
                      Ravegnani, F. and Volk, M.},
      title        = {{I}mpact of deep convection in the tropical tropopause
                      layer in {W}est {A}frica: in-situ observations and mesoscale
                      modelling},
      journal      = {Atmospheric chemistry and physics},
      volume       = {10},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {PreJuSER-13903},
      pages        = {201 - 214},
      year         = {2011},
      note         = {The authors acknowledge the partial support of the EC
                      SCOUT-O3 Integrated Project (505390-GOCE-CT-2004). This work
                      was partly supported by AMMA project. Based on French
                      initiative, AMMA was built by an international scientific
                      group and is currently funded by a large number of agencies,
                      especially from France, UK, US and Africa. It has been the
                      beneficiary of a major financial contribution from the
                      European Community's Sixth Framework Research Programme. We
                      acknowledge the anonymous reviewers for their valuable
                      suggestions.},
      abstract     = {We present the analysis of the impact of convection on the
                      composition of the tropical tropopause layer region (TTL) in
                      West-Africa during the AMMA-SCOUT campaign. Geophysica M55
                      aircraft observations of water vapor, ozone, aerosol and CO2
                      during August 2006 show perturbed values at altitudes
                      ranging from 14 km to 17 km (above the main convective
                      outflow) and satellite data indicates that air detrainment
                      is likely to have originated from convective cloud east of
                      the flights. Simulations of the BOLAM mesoscale model,
                      nudged with infrared radiance temperatures, are used to
                      estimate the convective impact in the upper troposphere and
                      to assess the fraction of air processed by convection. The
                      analysis shows that BOLAM correctly reproduces the location
                      and the vertical structure of convective outflow.
                      Model-aided analysis indicates that convection can influence
                      the composition of the upper troposphere above the level of
                      main outflow for an event of deep convection close to the
                      observation site. Model analysis also shows that deep
                      convection occurring in the entire Sahelian transect (up to
                      2000 km E of the measurement area) has a non negligible role
                      in determining TTL composition.},
      keywords     = {J (WoSType)},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK491},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000286180200015},
      url          = {https://juser.fz-juelich.de/record/13903},
}