4/3/13 Arctic Sea Ice Extent is close to winter max. and 30 yr. mean per Center for Ocean Ice, Danish Meteorological Inst., contrary to recent NSIDC report claiming excess melting

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4/4/13, "Arctic Forgot To Read The NSIDC Report," Steven Goddard

"The experts at NSIDC told us that Arctic sea ice has been melting since March 15, but the Arctic seems to have different ideas, and is very close to its winter maximum and 30 year mean." .

Arctic Sea Ice Extent, Center for Ocean and Ice, Danish Meteorological Institute

"Northern Hemisphere Sea Ice extent"

"Total sea ice extent on the northern hemisphere during the past years, including climate mean; plus/minus 1 standard deviation. The ice extent values are calculated from the ice type data from the Ocean and Sea Ice, Satellite Application Facility (OSISAF), where areas with ice concentration higher than 15% are classified as ice.

The total area of sea ice is the sum of First Year Ice (FYI), Multi Year Ice (MYI) and the area of ambiguous ice types, from the OSISAF ice type product. The total sea ice extent can differ slightly from other sea ice extent estimates. Possible differences between this sea ice extent estimate and others are most likely caused by differences in algorithms and definitions. Some time in 2013 sea ice climatology and anomaly data will become available here." 

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