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Long-distance atmospheric transport of microplastic fibres influenced by their shapes
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Long-distance atmospheric transport of microplastic fibers depends on their shapes
This study investigated how the shape of microplastic fibers affects how far they travel through the atmosphere. Long, thin fibers stay airborne longer and can be transported greater distances than compact fragments, explaining why synthetic textile fibers are so widely found in remote environments.
Long-distance atmospheric transport of microplastic fibers depends on their shapes
Researchers developed a theory-based settling velocity model for microplastic fibers in the atmosphere that accounts for fiber shape and cross-sectional dimensions, finding that correctly characterising flat fibers rather than treating them as cylinders increases estimated mean atmospheric residence time by over 450%, suggesting the ocean is a major source of airborne plastic and that long-range transport is far more efficient than previously thought.