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The Arctic sea ice extent September average in 2012 was about 45% lower than the 1981-2010 average. Recent years haven't been quite as bad. http://nsidc.org/cr
by tejohnso 8y ago
The Arctic sea ice extent September average in 2012 was about 45% lower than the 1981-2010 average. Recent years haven't been quite as bad.
http://nsidc.org/cryosphere/sotc/sea_ice.html http://nsidc.org/cryosphere/sotc/sea_ice.html
And it looks like volume is a bit worse than extent.
http://psc.apl.uw.edu/wordpress/wp-content/uploads/schweiger/ice_volume/BPIOMASIceVolumeAnomalyCurrentV2.1_CY.png http://psc.apl.uw.edu/wordpress/wp-content/uploads/schweiger...
- soperj 8y agothat's because there was a hurricane that moved a lot of ice around right near the end of the melt season. If there's less than 15% in the area, they consider it melted out. It's an anomaly year.