These Moderate-resolution Imaging Spectroradiometer (MODIS) false-colorimages show the total area in North America covered by snow (whitepixels) as compared to the 35-year average snowline (red line). Eachimage represents an 8-day composite for the periods November 1-7, 8-18,and 16-23, 2001. The light gray pixels show areas that were covered byclouds for the entire 8-day period. The green pixels are land regionswithout snow, blue pixels represent water, and dark gray shows where nodata were collected.
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References & Resources
Images courtesy Jim Foster, Janet Chien, George Riggs and Nick DiGirolamo, NASA GSFC
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