Slant-lidar aerosol extinction measurements and their relation to measured and calculated albedo changes.

Abstract

The slant-path (or zenith-angle scanning) lidar technique is used to measure boundary-layer optical depths for ten different times during a single day. The consistency of albedo and optical thickness measurements is tested by comparing measured albedo changes to those calculated from the optical thickness measurements. When reasonable values are assumed for particle refractive index and relative size distribution (not measured in this experiment), results agree to within the uncertainty arising from the 0.03 optical thickness measurement uncertainty. -from Authors