EFDC_+ Explorer incorporates incorporates the pre-and post-processing of Lagrangian particle track (LPT). The use of LPT's can be helpful when modeling oil spill tracks, emergency response, water quality applications, and plume tracking. When the Lagrangian Particle Tracking module is turned on, a LMC on the menu displays a report, as shown in Figure 1. Here the user can see the total number of particles and the number of groups that have been set, as well as the time for the release of the drifters and the end time for the observation of the drifters. Models with as many as 1.5 million drifters have been simulated, though loading time can increase with a large number of drifters.
...
To set the values related to the drifters, the user should RMC on the LPT tab in the Model Control form to open LPT Options form, as shown in Figure 2 240222387. This displays the various options for setting the drifters as described in detail in the following sections
...