UNAVCO IDV Particle Plume Dispersion UNAVCO IDV Particle Plume Dispersion
The IDV can display time-animation maps and movies of particle dispersion in 3D displays. This is useful, for example, in tracking volcano ash clouds.

Sample data:

Sample (synthetic) NetCDF-formatted particle (point) files with 100 time steps:
NetCDF binary file. Read more about NetCDF files.

Sample IDV Quicktime movie of particles from St. Augustine volcano in Alaska.

Two views of the same two-cloud (red and blue) eruption, at the same time step