[AAS12-P08] The effects of boundary layer processes on snowfall in Yanqing Zone of 2022 Winter Olympic Games *BO YU1, Jia DU1, Ruixin LIU1, Yujue LIU2, Ziming LI3, Luyang XU1 (1.Beijing Municipal Weather Forecast Center, 2.Institute of Urban Meteorology, China Meteorology Administration, 3.Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei)