Antarctic ozone hole

TOMS satellite data 1997-2010

The data are the October 1-15 averages of the total column ozone amount, given in Dobson Units. The area extent of the ozone hole for each year is indicated by the red 220 DU line.

Antarctic Ozone Home TOMS ozone image 1979

The prospects for the long-term recovery of the ozone layer are good. Non-essential consumption of the major ozone depleting substances in the developed world slowed during the early 1990s and ceased in 1996, indicating that if the international community continues to comply with the Montreal Protocol the ozone layer should fully recover between 2050 and 2065.

An important factor in the recovery of the ozone layer is the impact of the enhanced greenhouse effect. One possible consequence of the continued build up of carbon dioxide and other greenhouse gases in the atmosphere is a cooling of the stratosphere, which can result in more ozone destruction in Antarctica .

See also