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Proceedings Paper

Cloud optical depth measurement comparison between a Raman-Mie and Mie elastic lidar
Author(s): Yonghua Wu; Shuki Chaw; Barry Gross; Fred Moshary; Sam Ahmed
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Paper Abstract

In this paper, the properties of Low-level clouds are explored with a Raman-elastic lidar. In particular, we examine two complementary methods to measure thin cloud optical depth (COD). The first is direct integration of Raman Derived extinction while the second method utilizes a regression technique. We show that if we correct for aerosol influences the regression method for low cloud optical depth can be dramatically improved. Furthermore, estimates of extinction to backscatter ratio can be made within the cloud. We find that when the lidar ratio in cloud is averaged over the vertical extent, an S ratio on the order of 20 sr is found which is consistent with conventional water phase cloud droplet models.

Paper Details

Date Published: 20 October 2008
PDF: 11 pages
Proc. SPIE 7111, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing IV, 71110Q (20 October 2008); doi: 10.1117/12.800401
Show Author Affiliations
Yonghua Wu, City College, CUNY (United States)
Shuki Chaw, City College, CUNY (United States)
Barry Gross, City College, CUNY (United States)
Fred Moshary, City College, CUNY (United States)
Sam Ahmed, City College, CUNY (United States)

Published in SPIE Proceedings Vol. 7111:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing IV
Upendra N. Singh; Gelsomina Pappalardo, Editor(s)

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