Sea Ice Volume (IMAGE) University of Washington Caption Results from the newly created 110-year record of Arctic sea ice volume show an unexplained slight decline (black line) in the early 20th century. The current drop (red line), caused by warming temperatures due to climate change, is more than six times as steep. Credit Axel Schweiger/University of Washington Usage Restrictions With credit 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.