Multiple Scattering and CLOUDNET

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Multiple Scattering and CLOUDNET
D.Donovan and J. Pelon
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Multiple scattering
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Beam tends to spread out in Clouds
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Effective extinction is reduced
½ energy goes into forward diffraction peak. For
large particles and large FOV's F(z)0.5
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Semi-analytical model (Eloranta)
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Dependence on size
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Retrieval Procedure
(for thick clouds)
To get optical depth
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Low water clouds
(often missed by radars)
Small FOV should be small as possible Large FOV
of 2.5-3.0 microns sensitive to variations
between 5-25 microns
Feasible ! Should be attempted