An example of the LPT function may be seen in Figure 1. This example consists of a rectangular domain with flat bottom, an open boundary to the east and a flow boundary along the southwest edge. U component masks were inserted to demonstrate the functionality of the Lagrangian Particle Tracks computations when masks are used.
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Figure 1 Harbor_U grid showing the masks, boundaries and initial particle locations.
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Figure 3 shows the particle tracks colored by elevation and with random walk applied. Even though there was no vertical component, the tidal range is seen to result in changing particle elevations.
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Figure 2 Harbor_U: Trajectories of 5 drifters over 1 day (no random walk).
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Figure 3 Harbor_U: Trajectories of 5 drifters over 1 day (random walk).