Snow Depth Figure (image) University of Washington Caption Change in springtime Arctic snow depth compared to the average. The data come from Soviet drifting ice stations (1950-1987), US Ice Mass Balance buoys (1993-2013), and the NASA IceBridge airborne project (2009-2013). For measurements in the western Arctic only, the trend was a decline of 0.27 cm per year (about 1 inch less per decade) with 99 percent significance. Credit M. Webster / Univ. of Washington Usage Restrictions With credit 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.