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Ozone layer “healing” – UN 8 November 2018

Earth’s ozone layer finally healing, says UN
(via Belfast Telegraph)

 

Ozone

Image via NASA

The ozone layer had been thinning since the late 1970s. Scientists raised the alarm and ozone–depleting chemicals were phased out worldwide.

As a result, the upper ozone layer above the Northern Hemisphere should be completely repaired in the 2030s and the gaping Antarctic ozone hole should disappear in the 2060s, according to a scientific assessment released at a conference in Quito, Ecuador.

“It’s really good news,” said report co–chairman Paul Newman, chief Earth scientist at Nasa’s Goddard Space Flight Centre.

“If ozone–depleting substances had continued to increase, we would have seen huge effects. We stopped that.”

High in the atmosphere, ozone shields Earth from ultraviolet rays that cause skin cancer, crop damage and other problems. Use of man–made chemicals called chlorofluorocarbons (CFCs), which release chlorine and bromine, began eating away at the ozone.

Read more via the Belfast Telegraph…