Global Sea Ice Extent Anomaly Percent Mean For Year = +0.7% Published on October 20, 2013 by sunshinehours1 Right now the mean for the year for Global Sea Ice Anomaly percent is +0.7% above the 1981-2010 mean. The green line represents the mean. The anomaly started out near -4%, rose to over +4% earlier in the year, down to-2% and is now back up to 1%. Share this:TwitterFacebookLike Loading... Related