Arctic ozone loss calculations

Here we show the temporal development of Arctic ozone depletion averaged over the polar vortex on the basis of simulations of Chemical Lagrangian Model of the Stratosphere (CLaMS) for different years.

The upper panel shows the temporal development of simulated ozone depletion as a function of height and the lower panel shows the column ozone loss between 12 and 22 km in Dobson units (DU). For comparison, the maximum ozone losses for the other years are shown as colored arrows on the right side of the figure. The CLaMS simulation ends with the collapse of the polar vortex, after the air is mixed with ozone-rich air from lower latitudes.