Abstract

We present observations of cirrus clouds from June 2006 to July 2007 performed by using a two- wavelength lidar located at Hampton University. For this time period, cirrus clouds were observed mostly in $7\text{–}13.5\mathrm{km}$ altitudes. Data analyses have been performed focusing on a color-ratio retrieval. In total, 86,369 samples from 1,689 profiles ($1\min$ average and $15\mathrm{m}$ range resolution) containing cirrus clouds with attenuated backscatter ratio (ratio of attenuated total backscatter to the molecular backscatter) larger than 10 have been selected. The cirrus color ratio distribution shows a peak value at about 0.88 and a full width at half-maximum of 0.12.

© 2008 Optical Society of America

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