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Proceedings Paper

Lidar monitoring of clouds
Author(s): Luc R. Bissonnette; Gilles Roy; Stewart Cober; George A. Isaac
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Paper Abstract

The lidar has long been proposed as a potential remote sensor of cloud microphysical and optical parameters. The conventional lidar has had only mixed success because retrieval in a medium of such density requires an independently measured boundary value deep in the cloud and a relation between backscatter and extinction. The solution we propose is to make detection at multiple fields of view (MFOV) and exploit the additional information provided by multiple scattering. In this paper, we compare MFOV-based lidar retrievals with in situ measurements of the liquid water content and droplet diameters in liquid-phase stratus clouds. The results show good correlation between the lidar solutions and the in situ data, but a constant bias of 20-30% depending on the parameter. The bias is reduced to 10% if comparisons are restricted to the cloud base region accessible to the lidar. Another significant conclusion is that the lidar solutions are, within 20-30%, statistically representative of the complete layer in spite of the limited penetration range.

Paper Details

Date Published: 31 January 2002
PDF: 10 pages
Proc. SPIE 4539, Remote Sensing of Clouds and the Atmosphere VI, (31 January 2002); doi: 10.1117/12.454439
Show Author Affiliations
Luc R. Bissonnette, Defence Research Establishment Valcartier (Canada)
Gilles Roy, Defence Research Establishment Valcartier (Canada)
Stewart Cober, Meteorological Service of Canada (Canada)
George A. Isaac, Meteorological Service of Canada (Canada)

Published in SPIE Proceedings Vol. 4539:
Remote Sensing of Clouds and the Atmosphere VI
Klaus Schaefer; Olga Lado-Bordowsky; Adolfo Comeron; Michel R. Carleer; Janet S. Fender, Editor(s)

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