sharon sanders
Editor-in-Chief & President
State of the Climate
National Oceanic and Atmospheric Administration
National Climatic Data Center
September 2011 Report
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Arctic sea ice reached its annual minimum extent on September 9th at 4.33 million square km (1.67 million square miles), marking the second smallest extent on record. In September 2007, the sea ice extent dipped to 4.17 million square km (1.61 million square miles). According to the University of Washington's Polar Science Center, Arctic sea ice volume, which depends on ice thickness and extent, dropped to 4,000 cubic km (960 cubic miles) on September 10th, the smallest volume on record.
The average Arctic sea ice extent during September was 34.5 percent below average, ranking as the second smallest September extent since satellite records began in 1979. The extent was 2.43 million square kilometers (938,000 square miles) below average and 310,000 square kilometers (120,000 square miles) above the record low September extent set in 2007.
more...
http://www.ncdc.noaa.gov/sotc/
National Oceanic and Atmospheric Administration
National Climatic Data Center
September 2011 Report
snip
Arctic sea ice reached its annual minimum extent on September 9th at 4.33 million square km (1.67 million square miles), marking the second smallest extent on record. In September 2007, the sea ice extent dipped to 4.17 million square km (1.61 million square miles). According to the University of Washington's Polar Science Center, Arctic sea ice volume, which depends on ice thickness and extent, dropped to 4,000 cubic km (960 cubic miles) on September 10th, the smallest volume on record.
The average Arctic sea ice extent during September was 34.5 percent below average, ranking as the second smallest September extent since satellite records began in 1979. The extent was 2.43 million square kilometers (938,000 square miles) below average and 310,000 square kilometers (120,000 square miles) above the record low September extent set in 2007.
more...
http://www.ncdc.noaa.gov/sotc/