Fig. 2: AMP and total aerosol concentrations related to wind and air mass back trajectories.
From: Airborne microplastic particles detected in the remote marine atmosphere
a Average wind speed and direction (gray arrows)38 during AMP sample collection. The error bars represent the standard deviation of the wind speed. b AMP, total, and coarse mode aerosol concentrations per m3 for each sample. AMP are marked in magenta, total aerosol are dark blue, and coarse mode aerosol are marked in cyan and blue for >10 µm and >1 µm, respectively. Sample numbers are presented in the direction following the R/V Tara transect presented on the map. c Map of 48 h HYSPLIT back trajectory ensembles for each point along the R/V Tara transect in the Atlantic Ocean where AMP were detected38. These are average trajectories of the HYSPLIT “Ensemble option” that were calculated based on an endpoint at 250 m height, the minimum height for the optimal configuration of the ensemble. The vast majority of the air masses originate from the ocean for the full extent of the 48 h.
