The latest releases from the National Aeronautics and Space Administration's (NASA's) Earth Observatory include an eight-day composite map illustration showing the maximum snow cover in North America during the period March 5-12, 2000. The data were obtained using MODIS, a sensor aboard the Terra spacecraft. "When compared to the snow extent during average years, it is apparent that there was significantly less area covered by snow this year for each month from November through April."
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