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@ARTICLE{Abdelmonem:17426,
      author       = {Abdelmonem, A. and Schnaiter, M. and Amsler, P. and Hesse,
                      E. and Meyer, J. and Leisner, T.},
      title        = {{F}irst correlated measurements of the shape and light
                      scattering properties of cloud particles using the new
                      {P}article {H}abit {I}maging and {P}olar {S}cattering
                      ({PHIPS}) probe},
      journal      = {Atmospheric measurement techniques},
      volume       = {4},
      issn         = {1867-1381},
      address      = {Katlenburg-Lindau},
      publisher    = {Copernicus},
      reportid     = {PreJuSER-17426},
      pages        = {2125 - 2142},
      year         = {2011},
      note         = {We express our gratitude to the technical and scientific
                      staff of IMK-AAF for their continuous support until the
                      achievement of the presented work goals. The work of one of
                      the authors (Evelyn Hesse) was a result of the cooperation
                      with Zbigniew Ulanowski and supported by the National
                      Environment Research Council, UK. This work was funded
                      within the Helmholtz Research Program Atmosphere and Climate
                      and partly by the German Research Foundation (DFG contract
                      SCHN 1140/1-1) within the framework of the priority program
                      1294. We acknowledge support by Deutsche
                      Forschungsgemeinschaft and Open Access Publishing Fund of
                      Karlsruhe Institute of Technology.},
      abstract     = {Studying the radiative impact of cirrus clouds requires
                      knowledge of the relationship between their microphysics and
                      the single scattering properties of cloud particles.
                      Usually, this relationship is obtained by modeling the
                      optical scattering properties from in situ measurements of
                      ice crystal size distributions. The measured size
                      distribution and the assumed particle shape might be
                      erroneous in case of non-spherical ice particles. We present
                      here a novel optical sensor (the Particle Habit Imaging and
                      Polar Scattering probe, PHIPS) designed to measure
                      simultaneously the 3-D morphology and the corresponding
                      optical and microphysical parameters of individual cloud
                      particles. Clouds containing particles ranging from a few
                      micrometers to about 800 mu m diameter in size can be
                      characterized systematically with an optical resolution
                      power of 2 mu m and polar scattering resolution of 1 degrees
                      for forward scattering directions (from 1 degrees to 10
                      degrees) and 8 degrees for side and backscattering
                      directions (from 18 degrees to 170 degrees). The maximum
                      acquisition rates for scattering phase functions and images
                      are 262 KHz and 10 Hz, respectively. Some preliminary
                      results collected in two ice cloud campaigns conducted in
                      the AIDA cloud simulation chamber are presented. PHIPS
                      showed reliability in operation and produced size
                      distributions and images comparable to those given by other
                      certified cloud particles instruments. A 3-D model of a
                      hexagonal ice plate is constructed and the corresponding
                      scattering phase function is compared to that modeled using
                      the Ray Tracing with Diffraction on Facets (RTDF) program.
                      PHIPS is a highly promising novel airborne optical sensor
                      for studying the radiative impact of cirrus clouds and
                      correlating the particle habit-scattering properties which
                      will serve as a reference for other single, or
                      multi-independent, measurement instruments.},
      keywords     = {J (WoSType)},
      cin          = {IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-7-20101013},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK491},
      shelfmark    = {Meteorology $\&$ Atmospheric Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000296594000008},
      doi          = {10.5194/amt-4-2125-2011},
      url          = {https://juser.fz-juelich.de/record/17426},
}