Abstract

Monochromatic backscattering laser-radar data are used for the determination on the number density of cloud droplets within a cumulus cloud base. The method is based upon general properties of a cloud base as derived from in situ measurements in a large variety of continental cumulus clouds. The backscatter laser profile from the cloud base is analyzed, and points with equal optical-depth values are detected in each profile. The method of detection requires no knowledge of the multiple scattering contribution, even though its effect is not neglected and is allowed to vary as a function of the optical depth. Corrections for general clouds are suggested based upon lidar measurements and analysis of the backscattering profile characteristics.

© 1975 Optical Society of America

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