Upper Midwest Environmental Sciences Center

Fig. 4. Land cover generated from data from the North America Land Cover Characteristics Data Base, Version 2.0 (http://edc2.usgs.gov/glcc/na_int.php) with time-series data spanning April 1992 through March 1993 from the Advanced Very High Resolution Radiometer satellite.
URL: http://www.umesc.usgs.gov/terrestrial/amphibians/armi/twgcrn/figure4.html