Fig. 16: The link between new particle formation and air mass accumulation.
From: Understanding atmospheric processes: insights from the comparison between Beijing and Hyytiälä

The evolution of the particle number size distribution and nanoparticle ranking as a function of (a) time over populated land (TOPL) in Beijing, and (b) time over land (TOL) in Hyytiälä. Hourly mean datasets from 2018 to 2022 were used.