TOA Reflectance The TOA reflectance values specifies the ratio of radiation reflected by the surface to the radiation incident on the surface. Reflectanceρλ= πd2LλESUNλ θE dis the earth-sun distance in astronomical units,ESUNλis the mean solar irradiance for each spectral band, ...
This is important, for example, when evaluating the sky diffuse irradiance incident on a sloped natural surface or a tilted solar collector, e.g., Ref. [1]. This is also especially appropriate when attempting to optimize a collector's geometry [2], or considering the effect of any partial...
a model in which radiance is a constant along a light ray in free space and that the reflection of light at surface points is characterized by a bidirectional reflectance distribution function (BRDF) which is a function of the directions of the incident irradiance and of the emitted radiance. ...
Both compute incident indirect light only for a small subset of pixels (the cache), and later interpolate between pixels. Irradiance Caching uses scalar values that can be interpolated efficiently, but cannot account for shading variations caused by normal and reflectance variation between cache items...
Reflected radiances are modeled with the Lommel-Seeliger law, which requires incident spectral irradiance, spectral single-scattering albedo, and incidence and emission angles. Single-scattering albedos are produced from normalized reflectance spectra of asteroids produced in this study by Penttilä et ...
The incident solar irradiances at the TOA are 196.98 mW/(cm2·μm) (433 nm) and 159.31 mW/(cm2·μm) (670 nm). 3 The solar zenith angle varies from 0° to 70° with a step of 1°. By summing the simulated total radiance and the linear polarisation componentQ, we ...
spectral irradiance and upwelled spectral radiance distributions at a depth of 1 m for the DeSoto Canyon and Mississippi South Pass Stations. incident energy.) Stations 5 and 7, respectively, represent a low surface SPM concentration of 0.11 mg 1-l off the coast of the Florida panhandle (DeSot...
Presents radiative transfer simulations for a variety of measured and modeled benthic bidirectional reflectance distribution functions (BRDF), incident lighting conditions, bottom depths and water inherent optical properties. Definition of irradiance reflectance of a surface; Example of a measured and modeled...
Plate 7-1.The correction of a SPOT-4 muitispectral image of a mountainous region of North Canterbury, New Zealand for topographic and reflectance variation (Shepherd and Dymond, 2003). Corrections were applied for the cosθ variation in incident irradiance and for reflectance variation as a functi...
Calculated total scalar irradiance agreed well with the scalar irradiance reached a maximum of 200% of incident scalar irradiance. Below the sediment surface, the light field became diffuse with a forward-biased angular light distribution. A few millimeters into the sediment surface, attenuation ...