• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. Optical properties of contrail-induced cirrus. Discussion of unusual halo phenomena
 
  • Details
  • Full
Options
1997
Journal Article
Title

Optical properties of contrail-induced cirrus. Discussion of unusual halo phenomena

Abstract
Photographs of a 120 degree parhelion and a 22 degree parhelion within persistent contrails are presented. These phenomena result from hexagonal plate-shaped ice crystals oriented horizontally with diameters between 300 mu m and 2 mm. From our observations and reinvestigation of previous reports, we conclude that a subset of the population in persistent contrails can consist of highly regular, oriented, hexagonal plates or columns comparable to the most regular crystals in natural cirrus clouds. This is explained by measured ambient humidities below the formation conditions of natural cirrus. The resulting strong azimuthal variability of the scattering phase function impacts the radiative transfer through persistent contrails.
Author(s)
Sussmann, R.
Journal
Applied optics  
DOI
10.1364/AO.36.004195
Language
English
IFU  
Keyword(s)
  • aircraft

  • climatic impact

  • contrail

  • crystal growth

  • halo phenomena

  • ice crystals

  • optical properties

  • relative humidity

  • remote sensing

  • scattering phase function

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024