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@PHDTHESIS{Weigel:4724,
      author       = {Weigel, Katja},
      title        = {{I}nfrared limb-emission observations of the upper
                      troposphere, lower stratosphere with high spatial
                      resolution},
      volume       = {4305},
      school       = {Univ. Wuppertal},
      type         = {Dr. (Univ.)},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-4724, Juel-4305},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {XIV, 107, LXIX p.},
      year         = {2009},
      note         = {Record converted from VDB: 12.11.2012; Wuppertal, Univ.,
                      Diss., 2009},
      abstract     = {The Cryogenic Infrared Spectrometers and Telescopes for the
                      Atmosphere - New Frontiers (CRISTA-NF) instrument has
                      successfully taken part in the African Monsoon
                      Multidisciplinary Analyses - Stratospheric-Climate Links
                      with Emphasis on the Upper Troposphere and Lower
                      Stratosphere (AMMA-SCOUT-O3) measurement campaign in July
                      and August 2006. Deployed on the high-altitude aircraft
                      M55-Geophysica radiance measurements in the mid infrared are
                      taken between about 5 and 21 km altitude with a vertical and
                      horizontal sampling of up to 250 m and 15 km, respectively.
                      The Juelich Rapid Spectral Simulation Code (JURASSIC) was
                      used to retrieve the composition of the atmosphere from the
                      radiance in the spectral range between about 776 to 868
                      cm$^{−1}$. A new retrieval setup and improvements of the
                      forward model used for the retrieval allowed to obtain
                      temperature, altitude and the volume mixing ratios of water
                      vapor (H$_{2}$O ), ozone (O$_{3}$), nitric acid (HNO$_{3}$),
                      peroxyacetyl nitrate (PAN), carbon tetrachloride (CCl$_{4}$)
                      as well as aerosol extinction and a radiometric offset.
                      Intercomparisons between CRISTA-NF data and in situ
                      measurements from the Fast in situ Stratospheric Hygrometer
                      (FISH) and the Fast Ozone Analyzer (FOZAN), respectively,
                      show a good agreement. The retrieved variables are available
                      on a grid with 500 m vertical spacing with a vertical
                      resolution of about 500 m to 3 km below the flight altitude.
                      Hence, information about different atmospheric trace gases
                      and temperature are available in the upper troposphere,
                      lower stratosphere (UTLS) region with a higher spacial
                      resolution than today’s satellites and a better coverage
                      than in situ measurements can provide. The simultaneous
                      observation of trace gases mainly originating from the
                      troposphere (like H$_{2}$O and PAN) and from the
                      stratosphere (like O$_{3}$ and HNO$_{3}$ ), respectively,
                      allows to determine the origin of air masses and detect
                      mixing. The results for the test flight on 29 of July 2006
                      are discussed in detail. This flight started in Verona and
                      went to the south of Italy and back, crossing twice over the
                      subtropical jet. The CRISTA-NF observations over Italy and
                      the Mediterranean Sea indicated that a tropopause fold was
                      located on the northern side of the jet. Tracertracer
                      correlation between O$_{3}$ and PAN showed the presence of
                      mixed tropospheric and lowermost stratospheric air at this
                      fold and around the lapsrate tropopause north of it. The
                      structures seen in connection with this tropopause fold in
                      the O$_{3}$ mixing ratios of CRISTA-NF were reproduced by a
                      Chemical Lagrangian Model of the Stratosphere (CLaMS)
                      simulation but were not found in such detail in ECMWF
                      analysis data. These results emphasize that CRISTA-NF
                      provides and excellent tool to observe and analyze mesoscale
                      processes in the UTLS.},
      cin          = {ICG-1},
      cid          = {I:(DE-Juel1)VDB790},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      typ          = {PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/4724},
}