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@ARTICLE{Ptz:52078,
      author       = {Pätz, H.-W. and Volz-Thomas, A. and Hegglin, M. and
                      Brunner, D. and Fischer, H. and Schmidt, U.},
      title        = {{I}n-situ comparison of the {NO}y instruments flown in
                      {MOZAIC} and {SPURT}},
      journal      = {Atmospheric chemistry and physics},
      volume       = {6},
      issn         = {1680-7316},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {PreJuSER-52078},
      pages        = {2401 - 2410},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Two aircraft instruments for the measurement of total odd
                      nitrogen (NOy) were compared side by side aboard a Learjet
                      A35 in April 2003 during a campaign of the AFO2000 project
                      SPURT ( Spurengastransport in der Tropopausenregion). The
                      instruments albeit employing the same measurement principle
                      ( gold converter and chemiluminescence) had different inlet
                      configurations. The ECOPhysics instrument operated by
                      ETH-Zurich in SPURT had the gold converter mounted outside
                      the aircraft, whereas the instrument operated by FZ-Julich
                      in the European project MOZAIC III ( Measurements of ozone,
                      water vapour, carbon monoxide and nitrogen oxides aboard
                      Airbus A340 in-service aircraft) employed a Rosemount probe
                      with 80 cm of FEP-tubing connecting the inlet to the gold
                      converter. The NOy concentrations during the flight ranged
                      between 0.3 and 3 ppb. The two data sets were compared in a
                      blind fashion and each team followed its normal operating
                      procedures. On average, the measurements agreed within
                      $7\%,$ i.e. within the combined uncertainty of the two
                      instruments. This puts an upper limit on potential losses of
                      HNO3 in the Rosemount inlet of the MOZAIC instrument. Larger
                      transient deviations were observed during periods after
                      calibrations and when the aircraft entered the stratosphere.
                      The time lag of the MOZAIC instrument observed in these
                      instances is in accordance with the time constant of the
                      MOZAIC inlet line determined in the laboratory for HNO3.},
      keywords     = {J (WoSType)},
      cin          = {ICG-II},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB48},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000238675600004},
      url          = {https://juser.fz-juelich.de/record/52078},
}