Scientists from the United Nations say that the Earth’s ozone layer will recover in 40 years

Earth’s ozone layer is expected to recover in the next 40 years as ozone-depleting chemicals are phased out, says a panel of international experts backed by the United Nations. The panel, which publishes a new ozone layer report every four years, considers phasing out nearly 99% of ozone-depleting chemicals as an improvement.

In this false-color NASA photo, blue and purple shows a hole in Earth's protective ozone layer over Antarctica on October 5, 2022. It is generally shrinking but has grown to a moderately large size this year due to weather conditions.  / Credit: NASA via AP

In this false-color NASA photo, blue and purple shows a hole in Earth’s protective ozone layer over Antarctica on October 5, 2022. It is generally shrinking but has grown to a moderately large size this year due to weather conditions. / Credit: NASA via AP

The agency said the Montreal Protocol, a landmark global agreement to phase out harmful chemicals, has greatly helped the recovery of the ozone layer. The Montreal Protocol entered into force in 1989 and regulates nearly 100 man-made chemicals that damage the ozone layer.

“The impact of the Montreal Protocol on climate change mitigation cannot be overstated,” said Meg Seki, executive secretary of the UN Environment Programme’s Ozone Secretariat. “Over the past 35 years, the Protocol has become a true advocate for the environment.”

The UN also noted that an amendment to the 2016 measure, the Kigali Amendment to the Montreal Protocol, helps significantly reduce climate change. The amendment requires global powers to limit the production and consumption of many hydrofluorocarbons, or HFCs. Although these types of chemicals do not directly affect the ozone layer, they are considered potent greenhouse gases.

“Ozone activities set a precedent for climate action. Our success in phasing out ozone-depleting chemicals shows us what can and must be done – as a matter of urgency – to move away from fossil fuels, reduce greenhouse gas emissions and thus limit the rise in temperature,” said World Meteorological Organization Secretary General Prof. Petteri Taalas.

Research by the U.S. National Oceanic and Atmospheric Administration, which was published in 2022, found that global concentrations of ozone-depleting chemicals dropped by just over 50% in the mid-latitude stratosphere to levels seen in 1980. NOAA scientists said the continued decline “shows the threat of ozone layer retreat below a significant milestone in 2022.”

Biden meets with Mexico’s president to discuss border policy changes

Brazil detains hundreds after attacks on Congress and other government buildings

Georgia grand jury sums up Trump’s 2020 election poll

Leave a Reply

Your email address will not be published. Required fields are marked *