Disdrometer (IMAGE) Penn State Caption Sophisticated instruments, including laser disdrometers which measure precipitation as it passes through a fan-shaped laser-beam, collected data at McMurdo Station as part of the ARM West Antarctic Radiation Experiment (AWARE), a joint effort between the US Department of Energy and the National Science Foundation. Credit U.S. Department of Energy Atmospheric Radiation Measurement (ARM) user facility 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.