Abstract: Camera systems which measure a complete hemispherical field (?fisheye? lens systems), can be applied to the measurement of the radiance, but accurate radiometric and geometric calibrations are required to obtain absolute ...

Abstract: he transmission coefficient, TL, commonly used to propagate the upwelling nadir radiance, just below the ocean surface, to above the surface has been assumed to be a constant value of 0.543 in seawater. Because the index ...

Abstract: Transmissometers always accept a certain portion of the forward-scattered light. The error in the beam-attenuation coefficient c(?) due to this acceptance varies with the small-angle scattering function, single-scattering ...

Abstract: wo reflectance techniques, based on Kubelka?Munk (K-M) theory and on the Beer?Lambert (B-L) law, were used to measure the absorption coefficient of aerosol particles collected on a filter. The two methods agreed, with the ...

Abstract: A novel imaging solar aureole radiometer, which can obtain absolute radiometric measurements of the solar aureole when operated on an unstable platform, is described. A CCD array is used to image the aureole, while a neutral ...

Abstract: A measurement system for determining the spectral reflectance of whitecaps in the open ocean is described. The upwelling radiance is obtained from a ship by observing a small region of the water surface over time using a ...

Abstract: he upwelling radiance attenuation coefficient (KLu) in the upper 10 m of the water column can be significantly influenced by inelastic scattering processes, and thus will vary even with homogeneous water properties. The ...

Abstract: Vicarious calibration of ocean color satellites involves the use of accurate surface measurements of water-leaving radiance to update and improve the system calibration of ocean color satellite sensors. An experiment was ...