2012 Ozone Hole Max

  • Released Wednesday, October 24, 2012

An ozone hole forms above Antarctica every year. This year it reached its max on Sept. 22, 2012, but it is smaller than in the past because of usual variations in Antarctic weather conditions. The ozone hole reached its largest size six years ago, in 2006, when it covered more than 11 million square miles. World adherence to the Montreal Protocol-an international treaty that regulated the use of CFCs-has helped protect the ozone layer. Scientists expect the ozone layer to return to 1980 levels by 2050.


Please give credit for this item to:
NASA/Goddard Space Flight Center

Release date

This page was originally published on Wednesday, October 24, 2012.
This page was last updated on Wednesday, May 3, 2023 at 1:52 PM EDT.


This visualization originally appeared on the following tapes:
  • Montreal Protocol for IYC Symposium (ID: 2011109)
    Thursday, November 10, 2011 at 5:00AM
    Produced by - David Hon (NASA)