The Advanced Microwave Scanning Radiometer (AMSR-E), a high-resolution
passive microwave Instrument on NASA's Aqua satellite shows the state of
Arctic sea ice on September 10 in this image released on September 16,
2008. Arctic sea ice melted to its second-lowest level in summer, rising
a bit from 2007's record but still showing a strong downward trend that
is a key symptom of climate change, U.S. scientists said. The ice
slipped to its minimum extent for 2008 on September 12, when it covered
1.74 million square miles (4.52 square km), and now appears to be
growing as the Arctic starts its seasonal cool-down, the National Snow
and Ice Data Center said.
An iceberg floats near a harbour in the town of Kulusuk, east Greenland, August 1, 2009.
NASA handout image shows how satellite data reveals how the new record low Arctic sea ice extent, from September 16, 2012, compares to the average minimum extent over the past 30 years (in yellow). Sea ice extent maps are derived from data captured by the Scanning Multichannel Microwave Radiometer aboard NASA's Nimbus-7 satellite and the Special Sensor Microwave Imager on multiple satellites from the Defense Meteorological Satellite Program.
An iceberg floats near a harbour in the town of Kulusuk, east Greenland, August 1, 2009.
NASA handout image shows how satellite data reveals how the new record low Arctic sea ice extent, from September 16, 2012, compares to the average minimum extent over the past 30 years (in yellow). Sea ice extent maps are derived from data captured by the Scanning Multichannel Microwave Radiometer aboard NASA's Nimbus-7 satellite and the Special Sensor Microwave Imager on multiple satellites from the Defense Meteorological Satellite Program.
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