Properties of horizontally oriented ice crystals observed by polarization lidar over summit, Greenland Ryan R. Neely III, Robert A. Stillwell, Sebastian Cole, Jeffrey P. Thayer, Matthew Shupe, Marissa Goerke, Samuel Dorsi and Joseph Ulanowski EPJ Web Conf., 176 (2018) 05007 Published online: 13 April 2018 DOI: 10.1051/epjconf/201817605007