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@INPROCEEDINGS{Kretschmer:905548,
      author       = {Kretschmer, Erik and Friedl-Vallon, Felix and Gulde, Thomas
                      and Höpfner, Michael and Johansson, Sören and Kleinert,
                      Anne and Maucher, Guido and Neubert, Tom and Nordmeyer, Hans
                      and Piesch, Christof and Preusse, Peter and Riese, Martin
                      and Schardt, Georg and Schönfeld, Axel and Ungermann, Jörn
                      and Wetzel, Gerald},
      title        = {{B}alloon-borne {GLORIA} hyperspectral {L}imb and {N}adir
                      imager in the {LWIR}},
      reportid     = {FZJ-2022-00789},
      year         = {2021},
      abstract     = {The GLORIA-B (Gimballed Limb Observer for Radiance Imaging
                      of the Atmosphere - Balloon) instrument is an adaptation of
                      the very successful GLORIA-AB imaging Fourier transform
                      spectrometer (iFTS) flown on the research aircrafts HALO and
                      M55 Geophysica. The high spectral resolution in the LWIR
                      (Long Wave Infrared) allows for the retrieval of temperature
                      and of a broad range of atmospheric trace gases, with the
                      goal to retrieve O<sub>3</sub>, H<sub>2</sub>O,
                      HNO<sub>3</sub>, C<sub>2</sub>H<sub>6</sub>,
                      C<sub>2</sub>H<sub>2</sub>, HCOOH, CCl<sub>4</sub>, PAN,
                      ClONO<sub>2</sub>, CFC-11, CFC-12, SF<sub>6</sub>, OCS,
                      NH<sub>3</sub>, HCN, BrONO<sub>2</sub>,
                      HO<sub>2</sub>NO<sub>2</sub>, N<sub>2</sub>O<sub>5</sub> and
                      NO<sub>2</sub>. The radiometric sensitivity of the Balloon
                      instrument is further increased in comparison with the
                      GLORIA-AB instrument by having two detector channels on the
                      same focal plane array, while keeping the same concept of a
                      cooled optical system. This system improvement was achieved
                      with minimal adaptation of the existing optical
                      system.</p><p>The high spatial and temporal resolution of
                      the instrument is ensured by the imaging capability of the
                      Fourier transform spectrometer while stabilizing the
                      line-of-sight in elevation with the instrument and in
                      azimuth with the balloon gondola. In a single measurement
                      lasting 13 seconds, the atmosphere can be sounded from
                      mid-troposphere up to flight altitude, typically 30 km, with
                      a vertical resolution always better than 1 km for most
                      retrieved species; a spatial resolution up to 0.3 km can be
                      achieved in favourable conditions. Temperature retrieval
                      precision between 0.1 and 0.2 K is expected. A spectral
                      sampling up to 0.0625 cm<sup>-1</sup> can be
                      achieved.</p><p>The first flight of GLORIA-B shall take
                      place during the late-summer polar jet turn-around at
                      Kiruna/ESRANGE. This flight is organised in the frame of the
                      HEMERA project and was scheduled for summer 2020, but was
                      ultimately postponed to summer 2021. Beyond qualification of
                      the first balloon-borne iFTS, the scientific goals of the
                      flight are, among others, the quantification of the
                      stratospheric bromine budget and its diurnal evolution by
                      measuring vertical profiles of BrONO<sub>2 </sub>in
                      combination with BrO observations by the DOAS instrument of
                      University Heidelberg on the same platform.</p>},
      month         = {Apr},
      date          = {2021-04-19},
      organization  = {EGU General Assembly, Vienna
                       (Austria), 19 Apr 2021 - 30 Apr 2021},
      subtyp        = {After Call},
      cin          = {ZEA-2 / IEK-7},
      cid          = {I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)IEK-7-20101013},
      pnm          = {2112 - Climate Feedbacks (POF4-211)},
      pid          = {G:(DE-HGF)POF4-2112},
      typ          = {PUB:(DE-HGF)6},
      doi          = {10.5194/egusphere-egu21-11674},
      url          = {https://juser.fz-juelich.de/record/905548},
}