The World Meets in Ecuador to Protect Ozone Layer


This Montreal Protocol "came into being over 30 years ago in response to the revelation that chlorofluorocarbons (CFCs) and other ozone-depleting substances - used in aerosols, cooling and refrigeration systems, and many other items - were tearing a hole in the ozone layer and allowing risky ultraviolet radiation to flood through".

The "Scientific Assessment of Ozone Depletion: 2018" report is made available to the public on the Montreal Protocol's website.

Now, the latest report put out by a United Nations panel suggests that the ozone hole could patch up in the 2060s, if all goes to plan. Besides dichloromethane, another highly concentrated chemical identified in the stratosphere includes 1,2-dichloroethane - an ozone-depleting substance used to make PVC, a popular construction material.

"It's really good news", report co-chairman Paul Newman, chief Earth scientist at NASA's Goddard Space Flight Center, told the Associated Press.

Over the past few decades, humans have done significant damage to the ozone layer, which protects life on Earth from the sun's harmful ultraviolet rays.

At the current rate, the ozone over the northern hemisphere and mid-latitude are on track to heal by the 2030s, with the southern hemisphere following in the 2050s, and the polar regions by 2060.

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The emission of pollution containing chemicals such as chlorine and bromine has caused the ozone layer to deplete. It's a big deal since 10 percent of the upper ozone layer was gone in the 1990s, Newman told CNBC.

If nothing had been done to stop the thinning, the world would have destroyed two-thirds of its ozone layer by 2065, Newman said.

On its own, the ozone hole has slightly shielded Antarctica from the much larger effects of global warming - it has heated up but not as much as it likely would without ozone depletion, said Ross Salawitch, a University of Maryland atmospheric scientist who co-authored the report.

The ozone layer is showing signs of continuing recovery from man-made damage and is likely to heal fully by 2060, new evidence shows. Banned CFC emissions are increasing in China, but the Chinese government has promised to fix the problem.

It is worth noting the fact that informed other teams of specialists and researchers in the field of ecology of the atmosphere in different ways characterized the degree of recovery of the ozone layer, but in General they were inclined to think that the closer to the thirties of this century the recovery of the ozone layer of the Earth's atmosphere will enter a new phase in which scientists will be able to somewhat speed up the process and contribute to its "healing". That's the 30th Meeting of the Parties to the Montreal Protocol.

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