Estimating aerosol scattering hygroscopic growth factors at ambient relative humidity based on machine learning - Can Xia; Junying Sun; Xinyao Hu; Hongfei Tong; Xiaojing Shen; Yangmei Zhang; Quan Liu; Lei Liu; Jiayuan Lu; Huizheng Che; Xiaoye Zhang (Atmospheric Pollution Research, 2026)