Fig. 2: Plastic in Mediterranean sub-basins.
Normalized plastic concentrations across the Mediterranean sub-basins from the Tara Expedition in situ measurements (blue columns) and the model predictions (orange columns), with relative uncertainties (standard deviation: black error bars). In situ plastic concentrations were calculated as the debris weight per unit surface area (g/km2). Model concentrations were calculated as the ensemble average (Scenario M) of the number of virtual particles in a prescribed area around each Tara Expedition station (Methods). R2 = 0.96, p < 0.01 (Pearson test).
