The United Nations’ International Day for the Preservation of the Ozone Layer is celebrated on the 16th September every year. Commemorating the 1987 signing of the Montreal Protocol on Substances that Deplete the Ozone Layer, the day advocates activities that create awareness on topics related to climate change and ozone depletion.
Nearly thirty years after an international treaty banned the use of chlorofluorocarbons, the Antarctic ozone hole is finally starting to heal. By mid to late century, it should be fully recovered.
Tierra del Fuego in south Argentina has sent out a warning to residents in the province that the ozone layer hole as it expands to the north, over the tip of South America continent this week, it will be reaching its maximum size with UV radiation at 12, violet or extreme alert. The information was provided by Argentina's VAG Ushuaia Station.
The Antarctic ozone hole reached its annual peak size on Sept. 11, according to scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The size of this year’s hole was 24.1 million square kilometers, an area roughly the size of North America.
Scientists have identified four new man-made gases that are contributing to the depletion of the ozone layer. Two of the gases are accumulating at a rate that is causing concern among researchers. Worries over the growing ozone hole have seen the production of chlorofluorocarbon (CFC) gases restricted since the mid 1980s
It turns out that the ozone hole may not be completely healed--at least according to new NASA data. Scientists have examined the inner workings of the ozone hole that forms annually over Antarctica and have found that declining chlorine in the stratosphere has not yet caused a recovery of the ozone hole.
The hole in the ozone layer over Antarctica stretched for the third time this year to reach cities in the south of Argentina and Chile according to the Izaña Atmospheric research centre in Tenerife, Canary Islands.
United Nations Secretary General Ban Ki-moon called Monday on the international community to continue efforts that will preserve the world’s ozone layer and protect the environment. In his message for the International Day for the Preservation of the Ozone Layer, Mr. Ban pointed to the Montreal Protocol as an example of how Member States are capable to work for the common good.
An international agreement to phase out chemicals which attack the Earth’s vital ozone shield celebrates its 25th anniversary as a showcase for successful global environmental cooperation, “protecting our atmosphere for generations to come.”
The Antarctic ozone hole, which yawns wide every Southern Hemisphere spring, reached its annual peak on September 12, stretching 10.05 million square miles, the ninth largest on record and equivalent to three times the area of Brazil: 3.3m.