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  • Author or Editor: I. Pribluda x
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A. I. Carswell, A. Fong, S. R. Pal, and I. Pribluda

Abstract

This paper summarizes the results of a statistical analysis of lidar-determined cloud geometrical properties measured during the 1989 and 1991 campaigns of the Experimental Cloud Lidar Pilot Study. Useful lidar descriptors are introduced to specify the bottom-, top-, and midcloud altitudes. These are used to describe the behavior of cloud vertical location and vertical extent during several months of observations using a dual wavelength (1064 and 532 nm) Nd:YAG lidar at Toronto. Frequency distributions of cloud height and cloud thickness are presented and the relationship of the lidar descriptors to cloud properties are discussed. These data are compared with other information on cloud geometry available in the literature.

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Shiv R. Pal, Irina Pribluda, and Allan I. Carswell

Abstract

This paper describes wind measurements derived from displacements of small-scale cloud features obtained from time-lapse videography and simultaneous lidar measurements. Lidar provides the attitude of the cloud feature, with a high degree of accuracy. The video picture provides the information on the horizontal displacement coordinates of the wind speed and direction. Analysis of a large body of data has shown that the method can provide wind information with good spatial and temporal resolution. Comparisons with rawinsonde measurements show very good agreement.

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