IMAGES: Homing In on the Range

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Science  12 Mar 2004:
Vol. 303, Issue 5664, pp. 1589
DOI: 10.1126/science.303.5664.1589a

Boasting 15 years of satellite data, RangeView from the University of Arizona in Tucson lets visitors map vegetation changes across the United States and in parts of Mexico and Canada. Range managers and environmental scientists can use the site to chart the vegetation index—a measure of the type of plants growing in an area and their health—along with variables such as precipitation. Tools allow you to create animations that track changes through time. Above, a rendering of California and Nevada shows May 2003's greenness measures on the left and the deviation from 2002 data on the right.

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