Fig. 2
From: Abundance of non-conservative microplastics in the upper ocean from 1957 to 2066

Sources of microplastics in the numerical model. Source positions (a) and emissions (b) are shown for modeled particles representing microplastics during a 110-year computation. The combined emissions in North America (5 + 6 + 7) and South America (10 + 11 + 12) are plotted in b