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As a consequence of its capability to retrieve cloud-top elevations, stereoscopic observations from the Multi-angle Imaging SpectroRadiometer (MISR) can discriminate clouds from snow and ice. The central portion of Russia’s East Siberian Sea, including one of the New Siberian Islands, Novaya Sibir, are portrayed in these views from data acquired on May…(Read More)

Claire Parkinson of NASA’s Goddard Space Flight Center analyzed the length of the sea ice season throughout the Southern Ocean to obtain trends in sea ice coverage. Parkinson examined 21 years (1979-1999) of Antarctic sea ice satellite records and discovered that, on average, the area where southern sea ice seasons have lengthened by…(Read More)

Antarctica’s Mount Erebus may be covered with glaciers, but they do little to cool the volcano’s molten core. The world’s southernmost volcano to show activity during recorded history, Erebus holds a lava lake and occasionally experiences explosive eruptions. In 2004, the reliable presence of a lava lake at this volcano’s summit…(Read More)

Snowfall returned to the mountain ranges of western and central Colorado on September 18—the first significant accumulation of the 2002-03 snow season. Most of Colorado experienced drought conditions throughout the summer, so this precipitation was badly needed. In this true-color scene, acquired on Sept. 20 by the Terra MODIS sensor, the bright…(Read More)

The Moderate Resolution Imaging Spectroradiometer (MODIS), flying aboard NASA’s Terra and Aqua satellites, measures snow cover over the entire globe every day, cloud cover permitting. At spatial resolutions of up to 500 meters per pixel, MODIS allows scientists to distinguish between snow and clouds, both of which appear bright white when seen from above…(Read More)

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