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@ARTICLE{Tarasick:890256,
      author       = {Tarasick, David W. and Smit, Herman G. J. and Thompson,
                      Anne M. and Morris, Gary A. and Witte, Jacquelyn C. and
                      Davies, Jonathan and Nakano, Tatsumi and Van Malderen,
                      Roeland and Stauffer, Ryan M. and Johnson, Bryan J. and
                      Stübi, Rene and Oltmans, Samuel J. and Vömel, Holger},
      title        = {{I}mproving {ECC} {O}zonesonde {D}ata {Q}uality:
                      {A}ssessment of {C}urrent {M}ethods and {O}utstanding
                      {I}ssues},
      journal      = {Earth and Space Science},
      volume       = {8},
      number       = {3},
      issn         = {2333-5084},
      address      = {Malden, Mass.},
      publisher    = {American Geophysical Union},
      reportid     = {FZJ-2021-00840},
      pages        = {e2019EA000914},
      year         = {2021},
      abstract     = {We review the current state of knowledge of ozonesonde
                      uncertainty and bias, with reference to recent developments
                      in laboratory and field experiments. In the past 20 years
                      ozonesonde precision has improved by a factor of 2,
                      primarily through the adoption of strict standard operating
                      procedures. The uncertainty budget for the ozone partial
                      pressure reading has contributions from stoichiometry, cell
                      background current, pump efficiency and temperature, sensing
                      solution type, and volume. Corrections to historical data
                      for known issues may reduce biases but simultaneously
                      introduce additional uncertainties. This paper describes a
                      systematic approach to quantifying these uncertainties by
                      considering the physical and chemical processes involved and
                      attempts to place our estimates on a firm theoretical or
                      empirical footing. New equations or tables for ozone/iodine
                      conversion efficiency, humidity and temperature corrections
                      to pump flow rate, and altitude‐dependent pump flow
                      corrections are presented, as well as detailed discussion of
                      stoichiometry and conversion efficiencies. The nature of the
                      so‐called “background current” is considered in
                      detail. Two other factors particularly affecting past
                      measurements, uncertainties and biases in the pressure
                      measurement, and the comparison of sonde profiles to
                      spectrophotometric measurements of total column ozone, are
                      also discussed. Several quality assurance issues remain, but
                      are tractable problems that can be addressed with further
                      research. This will be required if the present goal of
                      better than $5\%$ overall uncertainty throughout the global
                      ozonesonde network is to be achieved.},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {211 - Die Atmosphäre im globalen Wandel (POF4-211)},
      pid          = {G:(DE-HGF)POF4-211},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000635218300012},
      doi          = {10.1029/2019EA000914},
      url          = {https://juser.fz-juelich.de/record/890256},
}