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@ARTICLE{Mei:884279,
      author       = {Mei, Fan and Wang, Jian and Comstock, Jennifer M. and
                      Weigel, Ralf and Krämer, Martina and Mahnke, Christoph and
                      Shilling, John E. and Schneider, Johannes and Schulz,
                      Christiane and Long, Charles N. and Wendisch, Manfred and
                      Machado, Luiz A. T. and Schmid, Beat and Krisna, Trismono
                      and Pekour, Mikhail and Hubbe, John and Giez, Andreas and
                      Weinzierl, Bernadett and Zoeger, Martin and Pöhlker, Mira
                      L. and Schlager, Hans and Cecchini, Micael A. and Andreae,
                      Meinrat O. and Martin, Scot T. and de Sá, Suzane S. and
                      Fan, Jiwen and Tomlinson, Jason and Springston, Stephen and
                      Pöschl, Ulrich and Artaxo, Paulo and Pöhlker, Christopher
                      and Klimach, Thomas and Minikin, Andreas and Afchine, Armin
                      and Borrmann, Stephan},
      title        = {{C}omparison of aircraft measurements during
                      {G}o{A}mazon2014/5 and {ACRIDICON}-{CHUVA}},
      journal      = {Atmospheric measurement techniques},
      volume       = {13},
      number       = {2},
      issn         = {1867-8548},
      address      = {Katlenburg-Lindau},
      publisher    = {Copernicus},
      reportid     = {FZJ-2020-03171},
      pages        = {661 - 684},
      year         = {2020},
      abstract     = {The indirect effect of atmospheric aerosol particles on the
                      Earth's radiation balance remains one of the most uncertain
                      components affecting climate change throughout the
                      industrial period. The large uncertainty is partly due to
                      the incomplete understanding of aerosol–cloud
                      interactions. One objective of the GoAmazon2014/5 and the
                      ACRIDICON (Aerosol, Cloud, Precipitation, and Radiation
                      Interactions and Dynamics of Convective Cloud Systems)-CHUVA
                      (Cloud Processes of the Main Precipitation Systems in
                      Brazil) projects was to understand the influence of
                      emissions from the tropical megacity of Manaus (Brazil) on
                      the surrounding atmospheric environment of the rainforest
                      and to investigate its role in the life cycle of convective
                      clouds. During one of the intensive observation periods
                      (IOPs) in the dry season from 1 September to 10 October
                      2014, comprehensive measurements of trace gases and aerosol
                      properties were carried out at several ground sites. In a
                      coordinated way, the advanced suites of sophisticated in
                      situ instruments were deployed aboard both the US Department
                      of Energy Gulfstream-1 (G1) aircraft and the German High
                      Altitude and Long-Range Research Aircraft (HALO) during
                      three coordinated flights on 9 and 21 September and 1
                      October. Here, we report on the comparison of measurements
                      collected by the two aircraft during these three flights.
                      Such comparisons are challenging but essential for assessing
                      the data quality from the individual platforms and
                      quantifying their uncertainty sources. Similar instruments
                      mounted on the G1 and HALO collected vertical profile
                      measurements of aerosol particle number concentrations and
                      size distribution, cloud condensation nuclei concentrations,
                      ozone and carbon monoxide mixing ratios, cloud droplet size
                      distributions, and downward solar irradiance. We find that
                      the above measurements from the two aircraft agreed within
                      the measurement uncertainties. The relative fraction of the
                      aerosol chemical composition measured by instruments on HALO
                      agreed with the corresponding G1 data, although the total
                      mass loadings only have a good agreement at high altitudes.
                      Furthermore, possible causes of the discrepancies between
                      measurements on the G1 and HALO are examined in this paper.
                      Based on these results, criteria for meaningful aircraft
                      measurement comparisons are discussed.},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {244 - Composition and dynamics of the upper troposphere and
                      middle atmosphere (POF3-244)},
      pid          = {G:(DE-HGF)POF3-244},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000514113600001},
      doi          = {10.5194/amt-13-661-2020},
      url          = {https://juser.fz-juelich.de/record/884279},
}