Antarctic Sea Ice Extent Update – 3rd Highest For This Day Published on March 23, 2014March 23, 2014 by sunshinehours1 Antarctic Sea Ice Extent is just under the 2013 track and slowly closing in. Extent is 887,000 sq km above the 1981-2010 mean, about 20% above. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Related