A Mystery Source Is Producing Banned Ozone-Destroying Chemicals, Shocking Scientists

Banned Ozone-Harming Gas Creeps Back, Suggesting a Mystery Source

Banned Ozone-Harming Gas Creeps Back, Suggesting a Mystery Source

The USA ceased production in 1996 and other countries agreed to phase out CFC production by 2010. CFC concentration in the atmosphere has declined by 15 percent from its peak in 1993, but over the past few years, the rate of decline has slowed down. This was partly because nations had all agreed to ban or phase out CFCs, which are short for "chlorofluorocarbons" but are simply called "ozone-depleting substances", due to an global treaty back in the 1980s called the Montreal Protocol.

There is a small chance that there is a more innocent explanation for the rise in CFC-11 emissions, the scientist say.

Today, the "hole in the ozone" over the South Pole is showing clear signs of recovery.

Researchers at the US National Oceanic and Atmospheric Administration (NOAA) have noticed an unexpected and persistent increase in ozone-destroying chemicals, called chlorofluorocarbons (CFCs).

The most likely source, according to the study, is from new, unreported production from an unidentified source in East Asia.

The forbidden emissions, ozone-depleting chemicals grow, said Wednesday a group of scientists, suggesting that someone may secretly produce a pollutant in violation of global agreements.

Officially, the production of CFC-11 should be near zero or nearly zero - at least, those are the countries that cooperate with the United Nations body that monitors and ensures compliance with the Montreal Protocol.

OnePlus 6 launch today
The OnePlus 6 is expected to price sub-Rs 40,000, at least for the base models with 6GB RAM and 64GB and 128GB storage options. It will possibly get a vertical dual rear camera setup with a 20-megapixel primary sensor and a 16-megapixel secondary sensor.

Another key question is whether there could be another explanation for a slower decline in CFC-11 post-2012, such as a change in the rate of chemical processes such as UV photolysis that break down CFC-11 in the stratosphere, or an increase in emissions from CFC "banks" - reservoirs that persist in old equipment and products that are still in use.

But they concluded these sources could not explain the increase, which they calculated at about 13 billion grams per year in recent years. 'The decline in CFC-11 is the graph that we all show in our atmospheric chemistry lectures to illustrate the effectiveness of the ban on CFCs.

High in the atmosphere, ozone shields Earth from ultraviolet rays that cause skin cancer, crop damage and other problems.

The goal of the study was not to point fingers; but figuring out where the emissions are coming from is a crucial environmental question.

That said, if the prompt action isn't taken as soon as possible, these emissions can prove to be a major roadblock and delay the recovery of ozone. This insults everybody who's worked on this for the last 30 years.

Unreported production of CFC-11 outside of certain specific carve-out purposes in the treaty would be a "violation of worldwide law", Weller confirmed, though he said that the Protocol is "non-punitive" and the remedy would probably involve a negotiation with the offending party, or country.

"Knowing how much time and effort and resources have gone into healing the ozone layer, and to see this is a shocker, frankly", said Montzka.

Recommended News

  • Revolution Bars Group plc

    Revolution Bars Group plc

    The stock of Under Armour, Inc. (NYSE:UA) has "Outperform" rating given on Thursday, September 17 by Telsey Advisory Group. It operates through John Crane, Smiths Medical, Smiths Detection, Smiths Interconnect, and Flex-Tek divisions.
    Florida man dies after vape pen explodes, sends projectiles into his head

    Florida man dies after vape pen explodes, sends projectiles into his head

    The owner of Lizard Juice, an e-cigarette retailer in Florida, said he does not think such vaping pens are "safe enough". The health effects related to the ingestion of e-cigarette vapor are still being studied by government agencies.
    Ederson Signs New Manchester City Contract Until 2025

    Ederson Signs New Manchester City Contract Until 2025

    Pep Guardiola reacted to the team's 106th league goal of the season by leaping out of his seat in the dugout and punching the air. Much of the merit for Manchester City having broken so many records in the Premier League this year has to go to Kevin de Bruyne.
  • Auburn golf finishes 4th at Norman regional, advances to NCAA Championships

    Auburn golf finishes 4th at Norman regional, advances to NCAA Championships

    The Wildcats lost in a playoff to Jacksonville for the final NCAA Championship spot out of the NCAA Baton Rouge Regional in 2017. On Tuesday, Hitt became the second Tar Heel in as many days to shoot in the 60s in three straight NCAA regional rounds.
    Amazon Prime Members to Receive 10% Off Whole Foods Sale Items

    Amazon Prime Members to Receive 10% Off Whole Foods Sale Items

    Combining digital coupons with physical store shopping gives Amazon-Whole Foods a big advantage over other market players. Being an Amazon Prime member will bring even more savings this summer as the company adds perks for Whole Foods shoppers.
    Suns win draft lottery, Kings picking 2nd

    Suns win draft lottery, Kings picking 2nd

    Despite being projected as the top pick and his desire to team up with Booker, Ayton is no sure bet to be a Sun. The Orlando Magic will pick sixth, followed by the Chicago Bulls seventh and Cleveland Cavaliers eighth.
  • FBI has probed ex-CIA employee over leak of hacking tools

    FBI has probed ex-CIA employee over leak of hacking tools

    Court documents suggest that Schulte was aware of the images and had warned one user not to "put anything too illegal on there". In documents, prosecutors allege that they found a large cache of child pornography on a server that was maintained by Schulte.
    Amazon Go stores are coming to Chicago and San Francisco

    Amazon Go stores are coming to Chicago and San Francisco

    Earlier reports from Curbed and the San Francisco Chronicle found clues that Amazon was eying retail space in the two cities. The company confirmed that Amazon Go stores would open in the two cities, but did not specify when, the Tribune said.
    Another Democratic Senator Announces Support For CIA Nominee Gina Haspel

    Another Democratic Senator Announces Support For CIA Nominee Gina Haspel

    Before she arrived, a high-value al-Qaida member was tortured extensively at the black site, by waterboarding and other methods. Mr Trump said Democrats like Donnelly say one thing, "and then they go to Washington and vote for the radical, liberal agenda".
  • Neuer in Germany squad, Wagner out

    Neuer in Germany squad, Wagner out

    Personally, I'm very sorry for him", Loew said of Goetze. "Some (of the reaction) seems to be over the top to me". We will be open and honest after the training camp, and without match practice, you can't go into a tournament.
    North Korea Appears to Be Shutting Down Its Nuke-Testing Site

    North Korea Appears to Be Shutting Down Its Nuke-Testing Site

    The shutdown process will unfold under the presences of journalists, including those from the US and South Korea. Pyongyang's pledge could open the way for airlines to route flights through North Korean airspace.
    Start your engines: Putin driving truck, opens newly-built Crimean Bridge

    Start your engines: Putin driving truck, opens newly-built Crimean Bridge

    Built at a cost of 223 billion roubles ($3.60 billion), the bridge is set to be the longest dual-purpose span in Europe. Many in Russia saw the bridge as a move toward restoring Moscow's rule over a historically Russian region.

We are pleased to provide this opportunity to share information, experiences and observations about what's in the news.
Some of the comments may be reprinted elsewhere in the site or in the newspaper.
Thank you for taking the time to offer your thoughts.