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Visible Spectrum

The interaction of incident solar energy with the earth's atmosphere is similar to the infrared RTE, however absorption is very weak and scattering dominates for both molecular and aerosol interaction. For lidar operation, a wavelength is chosen such that absorption is minimal and extinction of the laser pulse can be attributed to scattering. As a result, the formalism that was used to derive optical depth in the infrared is not valid for visible data.

Daniel DeSlover
Sun Aug 11 10:02:40 CDT 1996