Montreal Protocol on Substances that Deplete the Ozone Layer : report of the UNEP Technology and Economic Assessment Panel : report of the task force on continuing TEAP Legacy

Abstract

“Even if the control measures of the Montreal Protocol were to be implemented by all nations, today’s atmospheric abundance of chlorine (about 3 parts per billion by volume (ppbv) will at least double to triple during the next century. If the atmospheric abundance of chlorine reaches 9 ppbv by about 2050, ozone depletion of 0–4 percent in the tropics and 4–12 percent at high latitudes would be predicted, even without including the effects of heterogeneous chemical processes known to occur in polar regions, which may further increase the magnitude of the predicted ozone depletion.”