Blue is pure oxidiser. The picture emphasizes the ozone depletion over the southern hemisphere.
Blue colour defines ozone hole, and pink represents higher ozone levels.
A stack of 30 slices for the month of September 1987 is rendered in this picture, with each slice representing ozone concentration on a particular day. The aim of the simulation was to study Homogeneous Isotropic Turbulence in a 3D Navier-Stokes flow. It is noticeable that the vorticity is concentrated in the form of a tube. The picture shows the volume rendering of a turbulent flow over a flat plate. The picture was generated from a large volume data with unstructured grids using complex visualization algorithm.