The Ozone Hole Inc. :

NASA satellite observations have provided the first evidence the rate of ozone depletion in the Earth's upper atmosphere is decreasing. This may indicate the first stage of ozone layer recovery.
From an analysis of ozone observations from NASA's first and second Stratospheric Aerosol and Gas Experiment (SAGE) and the Halogen Occultation Experiment (HALOE) satellite instruments, scientists have found less ozone depletion in the upper stratosphere (22-28 miles altitude) after 1997. The American Geophysical Union Journal of Geophysical Research has accepted a paper for publication on these results.
This decrease in the rate of ozone depletion is consistent with the decline in the atmospheric abundance of man-made chorine and bromine-containing chemicals that have been documented by satellite, balloon, aircraft and ground based measurements.
Concerns about ozone depletion in the upper atmosphere or stratosphere led to ratification of the Montreal Protocol on Substances that Deplete the Ozone Layer by the international community in 1987. The protocol restricts the manufacture and use of human-made, ozone-depleting compounds, such as chlorofluorocarbons and halons.
"Ozone is still decreasing but just not as fast," said Mike Newchurch, associate professor at the University of Alabama, Huntsville, Ala., and lead scientist on the study. "We are still decades away from total ozone recovery. There are a number of remaining uncertainties such as the effect of climate change on ozone recovery. Hence, there is a need to continue this precise long-term ozone data record," he said.

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