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@ARTICLE{Hoffmann:185692,
      author       = {Hoffmann, L. and Alexander, M. J. and Clerbaux, C. and
                      Grimsdell, A. W. and Meyer, Catrin and Rößler, T. and
                      Tournier, B.},
      title        = {{I}ntercomparison of stratospheric gravity wave
                      observations with {AIRS} and {IASI}},
      journal      = {Atmospheric measurement techniques},
      volume       = {7},
      number       = {12},
      issn         = {1867-8548},
      address      = {Katlenburg-Lindau},
      publisher    = {Copernicus},
      reportid     = {FZJ-2014-07117},
      pages        = {4517 - 4537},
      year         = {2014},
      abstract     = {Gravity waves are an important driver for the atmospheric
                      circulation and have substantial impact on weather and
                      climate. Satellite instruments offer excellent opportunities
                      to study gravity waves on a global scale. This study focuses
                      on observations from the Atmospheric Infrared Sounder (AIRS)
                      onboard the National Aeronautics and Space Administration
                      Aqua satellite and the Infrared Atmospheric Sounding
                      Interferometer (IASI) onboard the European MetOp satellites.
                      The main aim of this study is an intercomparison of
                      stratospheric gravity wave observations of both instruments.
                      In particular, we analyzed AIRS and IASI 4.3 μm brightness
                      temperature measurements, which directly relate to
                      stratospheric temperature. Three case studies showed that
                      AIRS and IASI provide a clear and consistent picture of the
                      temporal development of individual gravity wave events.
                      Statistical comparisons based on a 5-year period of
                      measurements (2008–2012) showed similar spatial and
                      temporal patterns of gravity wave activity. However, the
                      statistical comparisons also revealed systematic differences
                      of variances between AIRS and IASI that we attribute to the
                      different spatial measurement characteristics of both
                      instruments. We also found differences between day- and
                      nighttime data that are partly due to the local time
                      variations of the gravity wave sources. While AIRS has been
                      used successfully in many previous gravity wave studies,
                      IASI data are applied here for the first time for that
                      purpose. Our study shows that gravity wave observations from
                      different hyperspectral infrared sounders such as AIRS and
                      IASI can be directly related to each other, if
                      instrument-specific characteristics such as different noise
                      levels and spatial resolution and sampling are carefully
                      considered. The ability to combine observations from
                      different satellites provides an opportunity to create a
                      long-term record, which is an exciting prospect for future
                      climatological studies of stratospheric gravity wave
                      activity.},
      cin          = {JSC},
      ddc          = {550},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {411 - Computational Science and Mathematical Methods
                      (POF2-411)},
      pid          = {G:(DE-HGF)POF2-411},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000352290900019},
      doi          = {10.5194/amt-7-4517-2014},
      url          = {https://juser.fz-juelich.de/record/185692},
}