Global and Regional Top of Canopy Reflectances (TOC-r) from SPOT-VGT, 2013-present

The Top-Of-Canopy (TOC) spectral reflectance refers to the portion of the incident solar radiation reflected by the surface in a given spectral band and without atmospheric interferences. The TOC reflectance is measured for a given sun direction and for a given viewing direction. Because of the natural anisotropy of the surface, the value of reflectance depends on the illumination and viewing angular conditions. Therefore, to compare and use jointly successive observations, it is necessary to normalize the measurements into a same angular configuration. The resulting value is the normalized TOC reflectance. These data are provided for the world and for South America based on SPOT-VGT.