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@ARTICLE{Lumpe:48493,
      author       = {Lumpe, J. and Bevilacqua, R. and Nedoluha, G. and Hoppel,
                      K. and Randall, C. and Russell, J. and Schiller, C. and Sen,
                      B. and Taha, G. and Toon, G. and Vömel, H.},
      title        = {{V}alidation of {P}olar {O}zone and {A}erosol {M}easurement
                      ({POAM}) {III} version 4 stratospheric water vapor},
      journal      = {Journal of Geophysical Research},
      volume       = {111},
      issn         = {0148-0227},
      address      = {Washington, DC},
      publisher    = {Union},
      reportid     = {PreJuSER-48493},
      pages        = {D11301},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The Polar Ozone and Aerosol Measurement (POAM) III solar
                      occultation instrument has been measuring water vapor at
                      high latitudes since April 1998. Retrievals extend from 5 to
                      50 km, with $5-7\%$ precision throughout the stratosphere
                      and a vertical resolution of 1 (3) km in the lower (upper)
                      stratosphere. Estimated systematic errors in the
                      stratosphere are $10-15\%.$ In this paper, we validate the
                      POAM III version 4 stratospheric water vapor using
                      correlative measurements from satellite, airborne, and
                      balloon-borne platforms. The resulting comparisons show that
                      POAM water vapor is high compared to correlative
                      measurements in the middle to lower stratosphere. The
                      satellite (Halogen Occultation Experiment (HALOE) and
                      Stratospheric Aerosol and Gas Experiment (SAGE) II)
                      comparisons also indicate a sunrise/sunset bias in the POAM
                      data, with sunset (Southern Hemisphere) retrievals larger
                      than sunrise (Northern Hemisphere) retrievals by $5-10\%.$
                      In the Northern Hemisphere, POAM is approximately $5-10\%$
                      high compared to all validation data sets between 12 and 35
                      km. At higher altitudes this difference decreases, such that
                      POAM agrees with HALOE at 40 km and is lower by $10\%$ at 50
                      km. In the Southern Hemisphere, POAM is $15-25\%$ higher
                      than HALOE below 35 km, with differences decreasing to
                      $10\%$ by 50 km. Similar differences are seen with SAGE II.
                      Despite these systematic differences the POAM water vapor
                      data are self-consistent and show no long-term trends in
                      accuracy or precision. Statistical comparisons of the water
                      vapor variability measured by POAM, HALOE, and SAGE II show
                      very good agreement. The POAM data are therefore valid for
                      scientific studies, and the science community is encouraged
                      to use this unique data set.},
      keywords     = {J (WoSType)},
      cin          = {ICG-I},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB47},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000238070900007},
      doi          = {10.1029/2005JD006763},
      url          = {https://juser.fz-juelich.de/record/48493},
}