Standoff determination of the particle size and concentration of small optical depth clouds based on double scattering measurements: concept and experimental validation with bioaerosols

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Authors: Gilles Roy and Nathalie Roy
Date: Mar. 20, 2008
From: Applied Optics(Vol. 47, Issue 9)
Publisher: Optical Society of America
Document Type: Author abstract; Report
Length: 126 words

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Abstract :

A multiple-field-of-view (MFOV) lidar is used to characterize size and optical depth of low concentration of bioaerosol clouds. The concept relies on the measurement of the forward scattered light by using the background aerosols at various distances at the back of a subvisible cloud. It also relies on the subtraction of the background aerosol forward scattering contribution and on the partial attenuation of the first-order backscattering. The validity of the concept developed to retrieve the effective diameter and the optical depth of low concentration bioaerosol clouds with good precision is demonstrated using simulation results and experimental MFOV lidar measurements. Calculations are also done to show that the method presented can be extended to small optical depth cloud retrieval. OCIS codes: 030.4280, 040.1520, 110.4280, 280.1100, 280.3640, 290.4210.

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Gale Document Number: GALE|A178620263