Evaluating the impact of control measures on sulfate-nitrate-ammonium aerosol variations and their formation mechanism in northern China during 2022 Winter Olympic Games - Zhangling Gui; Xiang Zhang; Yuanle Yang; Jiongjiong Jiang; Yafei Liu; Shijie Yin; Jing Chen; Dongli Hou; Xingang Liu (Atmospheric Research, 2024)