Abstract

The results of an experiment to measure the absorption, total scattering, and beam attenuation coefficients (a, b, and c respectively) over relatively long path lengths during the August 1990 optical closure cruise aboard the New Horizon are presented. The instrumentation consisted of a narrow-angle and a wide-angle charge-coupled device (CCD) camera, four gated irradiance detectors, an isotropic light source, and two computers. Calculations are described for computing the coefficients a, b, and c from the measurements. We confirmed that, within experimental uncertainty, the closure property holds for the spectral bandwidth used, 465 ± 15 nm.

© 1991 Optical Society of America