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@ARTICLE{Neis:276123,
      author       = {Neis, P. and Smit, Herman G.J. and Krämer, M. and Spelten,
                      N. and Petzold, Andreas},
      title        = {{E}valuation of the {MOZAIC} {C}apacitive {H}ygrometer
                      during the airborne field study {CIRRUS}-{III}},
      journal      = {Atmospheric measurement techniques},
      volume       = {8},
      number       = {3},
      issn         = {1867-8548},
      address      = {Katlenburg-Lindau},
      publisher    = {Copernicus},
      reportid     = {FZJ-2015-06600},
      pages        = {1233 - 1243},
      year         = {2015},
      abstract     = {The MOZAIC Capacitive Hygrometer (MCH) is usually operated
                      aboard passenger aircraft in the framework of MOZAIC
                      (Measurement of Ozone by Airbus In-Service Aircraft) for
                      measuring atmospheric relative humidity (RH). In order to
                      evaluate the performance of the MCH, the instrument was
                      operated aboard a Learjet 35A research aircraft as part of
                      the CIRRUS-III field study together with a closed-cell
                      Lyman-α fluorescence hygrometer (Fast in situ Stratospheric
                      Hygrometer, or FISH) and an open-path tunable diode laser
                      system (Open-path Jülich Stratospheric TDL ExpeRiment, or
                      OJSTER) for water vapour measurement. After reducing the
                      CIRRUS-III data set to data corresponding to MOZAIC aircraft
                      operation conditions, the 1 Hz RH data cross correlation
                      between the MCH and reference instruments FISH (clear sky)
                      and OJSTER (in-cirrus) yielded a remarkably good agreement
                      of R2 = 0.92 and slope m = 1.02 and provided a MCH
                      uncertainty of $5\%$ RH. Probability distribution functions
                      of RH deduced from the MCH and reference instruments agreed
                      well between 10 and $70\%$ RH with respect to liquid water
                      in the ambient temperature range of ca. −70 to −40 °C.
                      The use of MCH data is limited to sensor temperatures above
                      the calibration limit of Tsensor = −40 °C (corresponds to
                      ambient temperature of Tambient = −70 °C at typical
                      cruising speed of long-haul passenger aircraft). Good
                      performance of the MCH for clear sky as well as for
                      in-cirrus conditions demonstrated the sensor robustness also
                      for operation inside ice clouds.},
      cin          = {IEK-8 / IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)IEK-7-20101013},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243) / HITEC - Helmholtz
                      Interdisciplinary Doctoral Training in Energy and Climate
                      Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-243 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000352158300017},
      doi          = {10.5194/amt-8-1233-2015},
      url          = {https://juser.fz-juelich.de/record/276123},
}