Extended Data Fig. 2: Annual seasonal variation of MNP concentrations in the global atmosphere.
From: Atmospheric warming contributions from airborne microplastics and nanoplastics

a, Monthly mean particle concentration of MPs at different altitudes throughout the year. b, Monthly mean mass concentration of NPs at different altitudes throughout the year. Different colours represent various altitudes, as indicated in the legend. The error bars represent the standard deviation, calculated from daily output data.