Horizontally Oriented Ice Crystals Observed with the Combination of Zenith and 15-degree off-Zenith pointin Polarization Lidar over Beijing (116.3°E 40.0°N), China. - Wu, Zhaolong; Li, Chengcai; He, Yun; Baars, Holger; Seifert, Patric (EPJ Web of Conferences, 2026)