Figure \ref{470341} shows a subset of randomly selected particle trajectories in a vertical cross-section, recorded for a 2-min interval starting 30 min after ignition. In the uncoupled cases, the trajectories of particles with the same properties are parallel because the wind speed is constant and thus they travel the same distances. Whether they land or burnout depends only on their initial properties and height from where they are released, not on the environment. In the coupled cases, the trajectories depend on the particle’s interaction with the local wind. In these simulations, 2055 particles were tracked, from which 225 landed and 1830 burned out.