Sea ice concentration (IMAGE) Research Organization of Information and Systems Caption Figure 1. Sea ice concentration (% in colors) and sea ice edges in 1980's, 1990's, and 2000's (contours) in the Arctic Ocean on 1 July 2014 derived from microwave data of AMSR2 onboard the GCOM-W satellite of JAXA. Recently, the Arctic sea ice region reveals gradually decrease trend, but the sea ice still remains in the East Siberian Sea and Laptev Sea in early summer (July). The typical Northern Sea Route is shown by green line. Credit NIPR/JAXA/ADS Usage Restrictions Only for use with reports of this research 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.