Do you remember reading about CFC (chlorofluorocarbons) and other harmful chemicals burning a hole in our ozone layer? Well, good news. Due to a globally united collective action, the 1987 Montreal Protocol, scientists have shown proof that we are reversing the damage we did to the ozone layer.
A study published in the Geophysical Research Letters on January said “past studies have used statistical analyses of changes in the ozone hole’s size to argue that ozone depletion is decreasing. This study is the first to use measurements of the chemical composition inside the ozone hole to confirm that not only is ozone depletion decreasing, but that the decrease is caused by the decline in CFCs.”
Two years after the discovery of the Antarctic ozone hole in 1985, nations of the world signed the Montreal Protocol on Substances that Deplete the Ozone Layer, which regulated ozone-depleting compounds. Later amendments to the Montreal Protocol completely phased out production of CFCs. For the first time, scientists have shown through direct satellite observations of the ozone hole that levels of ozone-destroying chlorine are declining, resulting in less ozone depletion.
The ozone layer shields life from cancer-causing solar rays, and the recovery rate is estimated between one to three percent per decade. The world came together to protect the layer after scientists warned of an depleting ozone layer and the causes behind it.