Large scale multispectral BRDF of an urban area

This paper presents BRDF data of an urban area, assuming a pixel size of about 750 m/spl times/750 m. It is derived from multispectral scanner data acquired over Nuremberg, Germany, with a small spatial resolution (pixel size 2.1 m/spl times/2.1 m) by averaging over several 1000 lines of scanned data. The data show a clear decrease of reflectance across the nadir as distance from the retrosolar direction increases. This behaviour is created by the 3-D surface structure of an urban scene and the associated shadow casting.