Global Land Survey Examples
Examples of the GLS 2005 images for Saskatchewan. These images illustrate the four data layers in this global data set of Landsat imagery: the 1970s, 1990, 2000, and 2005. All four data layers were geometrically corrected to the terrain using the 2000 Landsat-7 data layer as the rectification basis. These data are now being distributed free of charge through NASA and the USGS. Credit: G. Gutman, NASA/Headquarters; J. Masek, NASA/Goddard Space Flight Center; C. Justice and S. Franks, University of Maryland; R. Byrnes and R. Headley, USGS.