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@ARTICLE{Song:838128,
      author       = {Song, Rui and Kaufmann, Martin and Ungermann, Jörn and
                      Ern, Manfred and Liu, Guang and Riese, Martin},
      title        = {{T}omographic reconstruction of atmospheric gravity wave
                      parameters from airglow observations},
      journal      = {Atmospheric measurement techniques discussions},
      volume       = {118},
      issn         = {1867-8610},
      address      = {Katlenburg-Lindau},
      publisher    = {Copernicus},
      reportid     = {FZJ-2017-06832},
      pages        = {1 - 18},
      year         = {2017},
      abstract     = {Gravity waves (GWs) play an important role in atmospheric
                      dynamics. Especially in the mesosphere and lower
                      thermosphere (MLT) dissipating GWs provide a major
                      contribution to the driving of the global wind system.
                      Therefore global observations of GWs in the MLT region are
                      of particular interest. The small scales of GWs, however,
                      pose a major problem for the observation of GWs from space.
                      We propose a new observation strategy for GWs in the
                      mesopause region by combining limb and sub-limb
                      satellite-borne remote sensing measurements for improving
                      the spatial resolution of temperatures that are retrieved
                      from atmospheric soundings. In our study, we simulate
                      satellite observations of the rotational structure of the O2
                      A-band nightglow. A key element of the new method is the
                      ability of the instrument or the satellite to operate in so
                      called "target mode", i.e. to stare at a particular point in
                      the atmosphere and collect radiances at different viewing
                      angles. These multi-angle measurements of a selected region
                      allow for tomographic reconstruction of a 2-dimensional
                      atmospheric state, in particular of gravity wave structures.
                      As no real data is available, the feasibility of this
                      tomographic retrieval is carried out with simulation data in
                      this work. It shows that one major advantage of this
                      observation strategy is that much smaller scale GWs can be
                      observed. We derive a GW sensitivity function, and it is
                      shown that "target mode" observations are able to capture
                      GWs with horizontal wavelengths as short as ~ 50 km for
                      a large range of vertical wavelengths. This is far better
                      than the horizontal wavelength limit of 100–200 km
                      obtained for conventional limb sounding},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {244 - Composition and dynamics of the upper troposphere and
                      middle atmosphere (POF3-244) / HITEC - Helmholtz
                      Interdisciplinary Doctoral Training in Energy and Climate
                      Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-244 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.5194/amt-2017-118},
      url          = {https://juser.fz-juelich.de/record/838128},
}