These tools, hosted on the RangeView web site, show bi-weekly greenness measures (NDVI) or greenness differences from normal for 1989 to 2004. The AVHRR tool creates custom animations for any area in the contiguous U.S., Southern Canada, and Northern Mexico; the spatial extent available in the MODIS tool is limited to the contiguous U.S. An animation can be created to compare any two years and image types.

The tool can be used to view the vegetation greenness from past years in order to see what greenness conditions were like under certain weather, fire or other conditions.