Arctic Sea Ice (IMAGE) University of Colorado at Boulder Caption This chart shows the 2011 September minimum of Arctic sea ice extent compared with the median 1979-2000 September minimum measurements. Credit NSIDC Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.