According to a report sponsored by the United Nations (UN), our planet's ozone layer will be fully repaired by 2066 if current trends of lowering the usage of ozone-depleting compounds continue.
Nearly 100 compounds, such as chlorofluorocarbons (CFCs) often present in aerosols, were identified as being damaging to the health of the ozone layer in 1987, when the Montreal Protocol was ratified globally.
The protocol intended to control the use of these compounds, and the Scientific Assessment Panel to the Montreal Protocol on Ozone-Depleting Substances publishes a status report every four years.
In terms of rebuilding the ozone layer, the most recent assessment, which will be delivered at the 103rd annual meeting of the American Meteorological Society, indicates that we are on the right track.
According to the data, it is anticipated that it will be recovered across the majority of the globe by 2040, over the Arctic by 2045, and over the Antarctic by 2066.
In addition, the report highlighted the progress made in reducing hydrofluorocarbons (HFCs) – compounds that have been employed as ozone-friendly alternatives to CFCs, but are nonetheless deemed damaging to the environment.
The ozone layer's ozone hole has gradually shrunk over the years. IMAGE: Vox
Despite the fact that these HFCs do not directly degrade the ozone layer, they nevertheless contribute to the problem of global warming. As such, the Montreal Protocol was updated to also target the reduction of these HFCs, whose usage has decreased over time, according to the paper.
According to calculations, if we maintain our current trajectory until 2100, we can avoid a temperature increase of between 0.3 and 0.5 degrees Celsius (0.54 and 0.9 degrees Fahrenheit).
"The fact that ozone recovery is on pace according to the most recent quadrennial report is wonderful news. It is impossible to overestimate the effect the Montreal Protocol has had on climate change mitigation "Executive Secretary of the UN Environment Program's Ozone Secretariat Meg Seki declared as much.
Over the past 35 years, the Protocol has become an environmental champion.
The Secretary-General of the Globe Meteorological Organization, Professor Petteri Taalas, emphasized that these excellent accomplishments should motivate the rest of the world to continue working toward better environmental consequences.
"Climate action is influenced by ozone action. Our achievement in phasing out ozone-depleting chemicals demonstrates what can and must be done immediately to transition away from fossil fuels, cut greenhouse gas emissions, and hence limit temperature rise "he said.