Abstract

The Visibility Laboratory integrating nephelometer measures the total volume scattering coefficient and volume scattering functions at 30° and 150° scattering angles. Equations for both measurements and calibration are derived and data reviewed. The ratio of measured to Rayleigh volume scattering function at each scattering angle is a simple function of the ratio of measured to Rayleigh total volume scattering coefficient regardless of altitude or wavelength in the visible spectrum. Methods are developed for obtaining the single scattering albedo from horizon sky radiance and the scattering optical thickness from sky radiance ratios at 55° scattering angle from the sun.

© 1985 Optical Society of America

Equilibrium radiance model applications and comparisons to atmospheric measurements and Rayleigh models

Jacqueline I. Gordon and Richard W. Johnson
Appl. Opt. 23(19) 3363-3372 (1984)

New uses for the solar almucantar

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Toward an ideal integrating nephelometer

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Some implications of the equation of transfer

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