Surface albedo through TM-Landsat 5 images and Digital Terrain Model/Albedo da superficie por meio de imagens TM-Landsat 5 e modelo numerico do terreno

This study aimed at to estimate the surface albedo in the Corumbatai River Basin, State of Sao Paulo, Brazil, using TM-Landsat 5 images, together with the Digital Terrain Model (DTM), in order to take into account the terrain slope, as well as the Mapping Evapotranspiration at High Resolution and with Internalized Calibration (METRIC) model. Available ancillary data from a meteorological station located in the study area, and ten images from 01/02/2009, 04/02/2010, 22/04/2009, 24/05/2009, 12/06/2010, 08/07/2008, 30/07/2010, 31/08/2010, 13/09/2009 and 31/10/2009, were also used. The use of TM-LANDSAT 5 images with the METRIC model and the DTM, allowed to identify the spatial and temporal variations of different coverages on the mapping of surface albedo of the Corumbatai River Basin. The data were consistent with those presented in the literature for sugarcane, water, pasture and eucalypt, for satellite images of clear-sky days.