#5901. Including the effects of subsurface currents on buoyant particles in Lagrangian particle tracking models: Model development and its application to the study of riverborne plastics over the Louisiana/Texas shelf

August 2026publication date
Proposal available till 03-06-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Oceanography;
Computer Science (miscellaneous);
Geotechnical Engineering and Engineering Geology;
Atmospheric Science;
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Abstract:
We report on the development and implementation of a novel physics-based algorithm that includes the effects of subsurface current on buoyant particles in a Lagrangian particle tracking model, specifically the Larval TRANSport Lagrangian (LTRANS) model. In the upper ocean, the direction and the magnitude of horizontal current change with water depth due to local effects such as the Ekman balance and large-scale influences such as the thermal wind balance. The subsurface current alters both the advection and the dispersion of weakly buoyant particles that could be suspended in the ocean surface boundary layer by turbulence. The transport and fate of riverborne plastics from the Mississippi and Atchafalaya Rivers were examined using a hindcast model solution for the Louisiana and Texas Continental Shelf (LATEX shelf).
Keywords:
Lagrangian particle tracking; Plastics; Turbulence

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