Multiscale ensemble empirical mode decomposition and multifractal approach of PM2.5 evolution in Changsha-Zhuzhou-Xiangtan Urban Agglomeration

DU Juan, LIU Chunqiong, WU Bo, ZHANG Jiao, HUANG Yi, SHI Kai∗

Journal of Atmospheric and Environmental Optics . 2022, (3): 304 -316 .