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Applied Optics

Applied Optics


  • Vol. 23, Iss. 13 — Jul. 1, 1984
  • pp: 2172–2177

Lidar determinations of extinction in stratus clouds

James D. Lindberg, William J. Lentz, Edward M. Measure, and Robert Rubio  »View Author Affiliations

Applied Optics, Vol. 23, Issue 13, pp. 2172-2177 (1984)

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A field test has been carried out to compare calculations made from lidar data to direct sensor measurements as tools for determining extinction as a function of altitude in the first kilometer of the earth’s atmosphere during the presence of haze layers and stratus clouds; 1.06-μm wavelength lidar returns were reduced using methods based on the stable solution to the lidar equation proposed by Klett. Direct sensor data were obtained from particulate spectrometers and a point visibility meter carried aloft by a tethered hydrogen balloon. The extinction profiles obtained from reduced lidar data are qualitatively in excellent agreement with those from the airborne payload. At moderate to high extinction values encountered in stratus clouds quantitative agreement is reasonably good; in haze conditions the agreement is less satisfactory, not only between the lidar results and those from the direct sensors, but between the results from the particle size distribution data and visibility meter data as well. Nevertheless, considering that extinction can vary over 4 orders of magnitude in such profiles, it is concluded that lidar is a quantitatively useful tool for studying stratus layers and is a particularly good means for determining ceiling altitude.

© 1984 Optical Society of America

Original Manuscript: February 17, 1984
Published: July 1, 1984

James D. Lindberg, William J. Lentz, Edward M. Measure, and Robert Rubio, "Lidar determinations of extinction in stratus clouds," Appl. Opt. 23, 2172-2177 (1984)

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  1. The model referred to is a module called XSCALE in the Electro Optical Atmospheric Effects Library (EOSAEL) developed by this laboratory. Details are in L. D. Duncan et al., U.S. Army Atmos. Sci. Lab. Tech. Rep. TR-0122, Vols. 1–5 (Nov.1982).
  2. J. D. Lindberg et al., “Early Wintertime European Fog and Haze: Report on Project Meppen 80,” U.S. Army Atmos. Sci. Lab. Tech. Rep. TR-0108 (Apr.1982).
  3. J. D. Klett, “Stable Analytical Inversion Solution for Processing Lidar Returns,” Appl. Opt. 20, 211 (1981). [CrossRef] [PubMed]
  4. J. D. Lindberg, Proc. Soc. Photo-Opt. Instrum. Eng. 305, 126 (1981).
  5. E. M. Measure, J. D. Lindberg, W. J. Lentz, “The Use of Lidar as a Quantitative Remote Sensor of Aerosol Extinction,” U.S. Army Atmos. Sci. Lab. Tech. Rep. TR-0136 (Aug.1983).
  6. R. Rubio, E. M. Measure, “ASL Multiwavelength Lidar,” U.S. Army Atmos. Sci. Lab. TR-0137 (Aug.1983).
  7. W. J. Lentz, “The Visioceilometer: A Portable Visibility and Cloud Ceiling Height Lidar,” U.S. Army Atmos. Sci. Lab. Tech. Rep. TR-0105 (Jan.1982).
  8. W. J. Lentz, “Lidar Inversions for Atmospheric Extinction with the Visioceilometer,” U.S. Army Atmos. Sci. Lab. Tech. Rep., in preparation.
  9. The specific particulate spectrometer models used were an ASASP-300, FSSP-100C, and OAP-200X, manufactured by Particle Measuring Systems, Inc., Boulder, Colo.
  10. Visibility Meter MS05, manufactured by AEG-Telefunken in West Germany, described in G. H. Ruppersberg, “Registrierung der Sichtweite mit dem Streulichtschreiber,” Beitr. Phys. Atmos. 37, 252 (1964).
  11. M. Kays et al., “Effect of Errors in Observed Ceiling Heights Upon the Vertical Structure Model,” U.S. Army Atmos. Sci. Lab. Tech. Rep., in preparation.

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