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Proceedings Paper

Lidar-retrieved cloud and precipitation parameters
Author(s): Luc R. Bissonnette; Gilles Roy; Nathalie Roy
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Paper Abstract

A multiple-scattering lidar technique is used to retrieve simultaneously the extinction coefficient and the effective particle diameter of clouds and precipitation. In addition, the linear depolarization ratio is measured to determine the liquid or solid phase of the particles. The reported measurements were made with a ground-based multiple-field-of-view (MFOV) lidar pointed at zenith. The lidar was fired in 10-s bursts, every minute for periods ranging from 30 min to 3 hours. The vertical resolution was selectable from 1.5 to 6 m but typically set at 3 m. The retrieved profiles are collected in the form of time-height maps of 1 min x 3 m resolution of the extinction coefficient, effective particle diameter, and depolarization ratio. Here, we analyze only the cloud layer and identify, from the statistics of the retrieved extinction coefficient and effective droplet diameter, important physical behaviors of water clouds. The results not only demonstrate the validity of the lidar retrievals but show that systematic lidar probings can yield significant information on cloud physics.

Paper Details

Date Published: 12 January 2005
PDF: 10 pages
Proc. SPIE 5653, Lidar Remote Sensing for Industry and Environmental Monitoring V, (12 January 2005);
Show Author Affiliations
Luc R. Bissonnette, Defence R&D Canada/Valcartier (Canada)
Gilles Roy, Defence R&D Canada/Valcartier (Canada)
Nathalie Roy, Defence R&D Canada/Valcartier (Canada)


Published in SPIE Proceedings Vol. 5653:
Lidar Remote Sensing for Industry and Environmental Monitoring V
Upendra N. Singh; Kohei Mizutani, Editor(s)

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