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@PHDTHESIS{Trinh:811614,
      author       = {Trinh, Quang Thai},
      title        = {{P}roperties of convective gravity waves derived by
                      combining global modeling and satellite observations},
      volume       = {324},
      school       = {Universität Wuppertal},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2016-04026},
      isbn         = {978-3-95806-150-7},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {III, 140 S.},
      year         = {2016},
      note         = {Universität Wuppertal, Diss., 2016},
      abstract     = {Gravity waves play the key role in the dynamics of the
                      middle atmosphere. Among different gravity wave sources,
                      convection has been long accepted as one of the most
                      prominent ones. However, due to the broad spectrum of
                      convective gravity waves and limitations of current
                      observation techniques, the contribution of these waves to
                      atmospheric dynamics is still an open issue. Moreover, due
                      to the same reasons, the horizontal and temporal scales of
                      gravity waves forced by convection are not well known. These
                      scales are usually treated in current convective gravity
                      wave parameterizations as free parameters and they are
                      defined by assuming typical scales of convective systems. In
                      this study, we addressed these issues using a unique
                      approach of combining modeling and measurements. In order to
                      determine the scales of convective gravity waves, instead of
                      assuming typical scales of convective systems, a systematic
                      survey varying the spatial and temporal scales as free
                      parameters of the Yonsei convective gravity wave
                      source(CGWS) scheme is performed. Gravity waves are
                      generated using this CGWS scheme and propagated upward using
                      the Gravity wave Regional Or Global RAy Tracer (GROGRAT).
                      Gravity wave momentum flux spectra in terms of horizontal
                      and vertical wave numbers are calculated from simulations
                      and compared with the respective spectrum observed by the
                      High Resolution Dynamics Limb Sounder(HIRDLS). Based on this
                      comparison, combinations of scale sets which reproduce the
                      observed gravity wave spectrum are selected. HIRDLS can only
                      see a limited portion of the gravity wave spectrum due to
                      visibility effects and observation geometry. To allow for a
                      meaningful comparison of simulated gravity waves to
                      observations a comprehensive filter that mimics the
                      instrument limitations is applied to the simulated waves.
                      This comprehensive observational filter takes into account
                      both instrument visibility due to radiative transfer and
                      retrieval as well as the complex observation geometry. In
                      order to analyze the contribution of convective gravity
                      waves to the atmospheric dynamics, the zonal momentum
                      balance is considered in vertical cross sections of gravity
                      wave momentum flux (GWMF) and gravity wave drag (GWD),and
                      consistency between model results and HIRDLS observations is
                      found. Global maps of the horizontal distribution of GWMF
                      are considered and good agreement in the structure as well
                      as the magnitude between simulated results and HIRDLS
                      observations is found. [...]},
      cin          = {IEK-7},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {899 - ohne Topic (POF3-899) / HITEC - Helmholtz
                      Interdisciplinary Doctoral Training in Energy and Climate
                      Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-899 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/811614},
}