A model was used to study the Antarctic ozone hole in 2002 compared to 2000. The model showed that in 2002, the ozone loss was generally less due to lower active chlorine levels. However, during a warming event, the ozone loss rates were similar to 2000. The disturbed vortex in 2002 had a larger impact on midlatitudes in the Southern Hemisphere. Overall, the ozone loss in the Southern Hemisphere was about 20 Dobson Units less in 2002 compared to 2000. The larger ozone levels in 2002 were due to increased descent at the edge of the vortex and enhanced horizontal transport caused by the distorted vortex.