A solar halo occurs over the sky in Lhasa, capital city of southwest China's Tibet Autonomous Region,at around 9:30 a.m., May 5, 2014. As an atmospheric optical phenomenon, solar halo occurs when sunlight goes through cirrostratus and is refracted or reflected by ice crystals.[Photo/CCTV]
A solar halo occurs over the sky in Lhasa, capital city of southwest China's Tibet Autonomous Region,at around 9:30 a.m., May 5, 2014. As an atmospheric optical phenomenon, solar halo occurs when sunlight goes through cirrostratus and is refracted or reflected by ice crystals.[Photo/CCTV]
