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Applied Optics

Applied Optics


  • Vol. 42, Iss. 3 — Jan. 20, 2003
  • pp: 332–341

Midlatitude cirrus cloud climatology from the Facility for Atmospheric Remote Sensing. IV. Optical displays

Kenneth Sassen, Jiang Zhu, and Sally Benson  »View Author Affiliations

Applied Optics, Vol. 42, Issue 3, pp. 332-341 (2003)

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In this fourth of a series of papers that describe long-term cloud research at the Facility for Atmospheric Remote Sensing at Salt Lake City, Utah, an ∼10-year record of polarization lidar and photographic observations is analyzed to characterize the occurrence of optical displays in our local varieties of midlatitude cirrus clouds. The frequencies of occurrence of various types of halo, arc, and corona displays are evaluated according to their appearance and longevity over nominal 1-h observation periods and to the meteorological source of the cirrus. We find that complex halo-arc displays are rare at our locale and that even the so-called common 22° halo occurs infrequently as a complete long-lived ring. For example, only ∼6% of the 1561-h daytime cirrus periods have bright and prolonged 22° halos, although a total of 37.3% have some indications of this halo, even if they are brief and fragmentary. Other fairly frequent features are the 22° upper tangent arc (8.6%), 22° parhelia (8.5%), and solar corona (7.2%). Of the optical displays observed, 83.6% are refraction based, only 1.9% are due to reflection phenomena, and a surprising 15.4% are caused by diffraction. Complex halo-arc displays are disproportionally associated with cirrus formed in tropical or subtropical airflow and also contain more horizontally oriented planar ice crystals. Lidar linear depolarization ratios from a subset of vivid displays show significant differences between halo- and the corona-producing cirrus, reflecting the effects of particle shape. Halos are associated with relatively warm cirrus that contain randomly and horizontally oriented planar ice crystals, whereas the colder corona cirrus produce much stronger depolarization from crystals too small to be uniformly oriented. Comparisons are made with available information from other locales, and we attempt to explain the geographical differences in terms of basic cirrus cloud processes.

© 2003 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.2940) Atmospheric and oceanic optics : Ice crystal phenomena
(010.3640) Atmospheric and oceanic optics : Lidar
(290.1090) Scattering : Aerosol and cloud effects

Original Manuscript: January 18, 2002
Revised Manuscript: May 20, 2002
Published: January 20, 2003

Kenneth Sassen, Jiang Zhu, and Sally Benson, "Midlatitude cirrus cloud climatology from the Facility for Atmospheric Remote Sensing. IV. Optical displays," Appl. Opt. 42, 332-341 (2003)

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  1. K. Sassen, K. N. Liou, “Scattering of polarized light by water droplet, mixed phase and ice crystal clouds. II. Angular depolarizing and multiple scattering behavior,” J. Atmos. Sci. 36, 852–861 (1979). [CrossRef]
  2. K. Sassen, “Remote sensing of planar ice crystal fall attitudes,” J. Meteorol. Soc. Jpn. 58, 422–429 (1980).
  3. K. Sassen, “Corona producing cirrus cloud properties derived from polarization lidar and photographic analyses,” Appl. Opt. 30, 3421–3428 (1991). [CrossRef] [PubMed]
  4. K. Sassen, G. G. Mace, J. Hallett, M. R. Poellot, “Corona-producing ice clouds: a case study of a cold cirrus layer,” Appl. Opt. 37, 1477–1585 (1998). [CrossRef]
  5. K. Sassen, “Cirrus cloud iridescence: a rare case study,” Appl. Opt. 42, 486–491 (2003). [CrossRef] [PubMed]
  6. R. A. R. Tricker, Ice Crystal Halos, facsimile reproduction (Optical Society of America, Washington, D.C., 1979).
  7. R. Greenler, Rainbows, Halos, and Glories (Cambridge U. Press, Cambridge, 1980).
  8. W. Tape, Atmospheric Halos, Vol. 64 of Antarctic Research Series (American Geophysical Union, Washington, D.C., 1994). [CrossRef]
  9. J. A. Lock, L. Yang, “Mie theory of the corona,” Appl. Opt. 30, 3408–3414 (1991). [CrossRef] [PubMed]
  10. K. Sassen, S. Benson, “A midlatitude cirrus cloud climatology from the Facility for Atmospheric Remote Sensing. II. Microphysical properties derived from lidar depolarization,” J. Atmos. Sci. 58, 2103–2112 (2001). [CrossRef]
  11. K. Sassen, J. R. Campbell, “A midlatitude cirrus cloud climatology from the Facility for Atmospheric Remote Sensing. I. Macrophysical and synoptic properties,” J. Atmos. Sci. 58, 481–496 (2001). [CrossRef]
  12. K. Sassen, J. M. Comstock, “A midlatitude cirrus cloud climatology from the Facility for Atmospheric Remote Sensing. III. Radiative properties,” J. Atmos. Sci. 58, 2113–2127 (2001). [CrossRef]
  13. K. Sassen, J. M. Comstock, Z. Wang, G. G. Mace, “Cloud and aerosol research capabilities at FARS. The Facility for Atmospheric Remote Sensing,” Bull. Am. Meteorol. Soc. 82, 1119–1138 (2001). [CrossRef]
  14. S. K. Cox, D. S. McDougal, D. A. Randall, R. A. Schiffer, “FIRE—the first ISCCP regional experiment,” Bull. Am. Meteorol. Soc. 13, 114–118 (1987). [CrossRef]
  15. E. Tränkle, R. G. Greenler, “Multiple scattering effects in halo phenomena,” J. Opt. Soc. Am. A 4, 591–599 (1987). [CrossRef]
  16. S. Benson, “Lidar depolarization study to infer cirrus cloud microphysics,” M.S. thesis (University of Utah, Salt Lake City, Utah, 1999).
  17. R. G. Greenler, M. Drinkwine, A. J. Mallmann, G. Blumenthal, “The origin of sun pillars,” Am. Sci. 60, 292–302 (1972).
  18. S. Dobbie, P. Jonas, “Radiative influences on the structure and lifetime of cirrus clouds,” Q. J. R. Meteorol. Soc. 127, 2663–2682 (2001). [CrossRef]
  19. K. Sassen, N. C. Knight, Y. Takano, A. J. Heymsfield, “Effects of ice crystal structure on halo formation: cirrus cloud experimental and ray-tracing modeling studies,” Appl. Opt. 30, 4590–4601 (1994). [CrossRef]
  20. P.-P. H. Verschure, “Thirty years of observing and documenting sky optical phenomena,” Appl. Opt. 37, 1585–1588 (1998). [CrossRef]
  21. M. Pekkola, “Finnish Halo Observing Network: search for rare halo phenomena,” Appl. Opt. 30, 3542–3544 (1991). [CrossRef]
  22. L. T. Crowley, M. Schroeder, “Halo frequencies,” unpublished report of the Halo Research Section of the German Arbertskrieses Meteore, Berlin, Germany, 1999.
  23. K. Sassen, Y. Takano, “Parry arc: a polarization lidar, ray tracing, and aircraft case study,” Appl. Opt. 39, 6738–6745 (2000). [CrossRef]
  24. J. Nelson, “Sublimation of ice crystals”,J. Atmos. Sci. 55, 910–919 (1998). [CrossRef]

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