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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 14, Iss. 4 — Dec. 25, 2010
  • pp: 444–450

An Algorithm to Determine Aerosol Extinction Below Cirrus Cloud from Mie-LIDAR Signals

Zhenzhu Wang, Decheng Wu, Dong Liu, and Jun Zhou  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 14, Issue 4, pp. 444-450 (2010)


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Abstract

The traditional approach to inverting aerosol extinction makes use of the assumption of a constant LIDAR ratio in the entire Mie-LIDAR signal profile using the Fernald method. For the large uncertainty in the cloud optical depth caused by the assumed constant LIDAR ratio, an not negligible error of the retrieved aerosol extinction below the cloud will be caused in the backward integration of the Fernald method. A new algorithm to determine aerosol extinction below a cirrus cloud from Mie-LIDAR signals, based on a new cloud boundary detection method and a Mie-LIDAR signal modification method, combined with the backward integration of the Fernald method is developed. The result shows that the cloud boundary detection method is reliable, and the aerosol extinction below the cirrus cloud found by inverting from the modified signal is more efficacious than the one from the measured signal including the cloud-layer. The error due to modification is less than 10% taken in our present example.

© 2010 Optical Society of Korea

OCIS Codes
(280.1100) Remote sensing and sensors : Aerosol detection
(280.3640) Remote sensing and sensors : Lidar
(010.1615) Atmospheric and oceanic optics : Clouds

History
Original Manuscript: September 3, 2010
Revised Manuscript: October 25, 2010
Manuscript Accepted: November 2, 2010
Published: December 25, 2010

Citation
Zhenzhu Wang, Decheng Wu, Dong Liu, and Jun Zhou, "An Algorithm to Determine Aerosol Extinction Below Cirrus Cloud from Mie-LIDAR Signals," J. Opt. Soc. Korea 14, 444-450 (2010)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-14-4-444


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