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@ARTICLE{Smit:155383,
      author       = {Smit, Herman G.J. and Rohs, S. and Neis, P. and Boulanger,
                      D. and Krämer, Martina and Wahner, A. and Petzold, A.},
      title        = {{T}echnical {N}ote: {R}eanalysis of upper troposphere
                      humidity data from the {MOZAIC} programme for the period
                      1994 to 2009},
      journal      = {Atmospheric chemistry and physics / Discussions},
      volume       = {14},
      number       = {13},
      issn         = {1680-7375},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2014-04552},
      pages        = {18905 - 18942},
      year         = {2014},
      abstract     = {In-situ observational data on the relative humidity (RH) in
                      the upper troposphere and lowermost stratosphere (UT/LS), or
                      tropopause region, respectively, collected aboard civil
                      passenger aircraft in the MOZAIC (Measurements of OZone,
                      water vapour, carbon monoxide and nitrogen oxides by
                      in-service AIrbus airCraft) programme were reanalysed for
                      the period 2000 to 2009. Previous analyses of probability
                      distribution functions (PDF) of upper troposphere humidity
                      (UTH) data from MOZAIC observations from year 2000 and later
                      indicated a bias of UTH data towards higher RH values
                      compared to data of the period 1994 to 1999. As a result,
                      PDF of UTH data show a substantial fraction of observations
                      above $100\%$ relative humidity with respect to liquid water
                      (RHliquid), which is not possible from thermodynamical
                      principles. An in-depth reanalysis of the data set recovered
                      a calibration artefact from year 2000 on, while data of the
                      previous period from 1994 to 1999 were found to be correct.
                      The full data set for 2000–2009 was reanalysed applying
                      the adjusted calibration procedure. Applied correction
                      schemes and a revised error analysis are presented along
                      with the reanalysed PDF of RHliquid and RHice.},
      cin          = {IEK-8 / IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)IEK-7-20101013},
      pnm          = {233 - Trace gas and aerosol processes in the troposphere
                      (POF2-233) / 234 - Composition and Dynamics of the Upper
                      Troposphere and Stratosphere (POF2-234) / HITEC - Helmholtz
                      Interdisciplinary Doctoral Training in Energy and Climate
                      Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF2-233 / G:(DE-HGF)POF2-234 /
                      G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.5194/acpd-14-18905-2014},
      url          = {https://juser.fz-juelich.de/record/155383},
}