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Mystery rise in ozone-depleting CFC detected


Posted on Thursday, 17 May, 2018 | Comment icon 7 comments

Someone is still producing ozone-depleting chemicals. Image Credit: NASA
Scientists suspect that someone is still producing a banned chemical that is known to damage the ozone layer.
Situated high up in the planet's stratosphere, the ozone layer is a special region which helps to protect the Earth from harmful ultraviolet radiation coming from the sun.

Scientists first noticed that it appeared to be thinning above Antarctica back in the 1980s, a worrying trend that was being fueled by the presence of certain chemicals in hair sprays, refrigerators, air conditioning systems and other CFC-containing products.

The discovery that these chemicals were responsible for depleting the ozone layer led to a significant reduction in the manufacture and use of CFCs in the hope that this would slow down or even reverse the damage that they had been causing.

Now though, more than 30 years later, scientists have detected an unexplained rise in atmospheric levels of CFC-11 - suggesting that someone, somewhere is still producing it.

Illegal manufacture of the chemical in East Asia is thought to be primarily responsible.

"The [findings] do point in that direction, fairly definitively," said Dr Stephen Montzka. "We are making the measurements from very far away from these regions and I think more specificity is going to come once the people... in that region... look carefully at their measurements and publish their results."

"Any production of an ozone-depleting gas that's controlled by the Montreal Protocol has to be reported to the ozone secretariat, and, currently, global production is essentially zero."

"We know of no production even for intermediary or side products."

Source: BBC News | Comments (7)

Tags: Ozone Layer

Recent comments on this story
Comment icon #1 Posted by Vilasarius on 17 May, 2018, 17:26
It is unbelievable that someone would continue to produce something that could be so detrimental to earth's survival. But greed, lack of empathy, or a dozen other reason's overrule the word "unbelievable."
Comment icon #2 Posted by keithisco on 17 May, 2018, 18:49
There must be millions of ancient refrigerators and air conditioning units in East Asia that are just thrown in landfill to leak theirCFC's into the atmosphere.
Comment icon #3 Posted by Doug1o29 on 17 May, 2018, 20:40
CFCs eventually decompose naturally, but it's a slow process. We'll need some research to trace the source of these new CFCs. In the meantime, it's too early to panic. Doug
Comment icon #4 Posted by Seti42 on 17 May, 2018, 21:02
C'mon, we all know it's Donny Trump's secret hair spray factory.
Comment icon #5 Posted by pallidin on 18 May, 2018, 6:06
Well, at least the World at-large recognizes the dangers to our Ozone of unabated release of certain chemicals into our air. Not perfect, but a good start and effort.
Comment icon #6 Posted by Carlos Allende on 18 May, 2018, 7:32
_(looks up from spraying Digby the Biggest Dog in the World with giant hairspray)_
Comment icon #7 Posted by Calibeliever on 18 May, 2018, 13:49
I consider the eradication of CFCs one of the great triumphs of mankind working together to solve a problem. I remember all the outcry about how it would devastate the economy, disrupt manufacturing and cause cthulhu to rise. There was much gnashing and wailing and none of it came to pass. It should have been a lesson to us about how industry tries to debunk science so they can continue their destructive practices ... nope.


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