...
To create visualizations of the predicted trajectories, 11 particles were released in a diagonal transect spanning 43-45oN and 111-113oW of Yellowstone National Park at varying atmospheric pressure levels (Figure 3). The trajectories are plotted on an Eckert IV projection. The transect represents material ejected all across the park, as it is difficult to predict the exact location of the next eruption as well as the initial distribution of material in the initial plume of ejecta.
...