METHODS OF DETERMINING THE LIQUID WATER CONTENT OF A CLOUD
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United States of America Patent
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Issued Date -
Apr 25, 2013
app pub date -
Oct 25, 2011
filing date -
Oct 25, 2011
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Abstract
In one aspect, methods of determining a size distribution of water droplets in a cloud are described herein. In some embodiments, a method of determining a size distribution of water droplets in a cloud comprises sampling a depth of a cloud with a beam of electromagnetic radiation, measuring echo intensities of the electromagnetic radiation returned from the cloud with a detector, determining a measured optical extinction coefficient from the measured echo intensities, determining a measured backscatter coefficient from the measured echo intensities, determining a lidar ratio from the measured optical extinction coefficient and the measured backscatter coefficient, determining from the lidar ratio a value pair comprising a shape parameter (μ) and median volume diameter (DMVD) of the water droplets, and determining a size distribution of the water droplets using the value pair (μ, DMVD).
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