Mysterious rise in emissions of ozone-damaging chemical
Scientists have detected an unexpected rise in atmospheric levels of CFC-11, a chlorofluorocarbon (CFC) highly damaging to the ozone layer. Banned by the Montreal Protocol in 1987, CFC-11 was seen to be declining as expected but that fall has slowed down by 50% since 2012.
Researchers say their evidence shows it's likely that new, illegal emissions of CFC-11 are coming from East Asia. These could hamper the recovery of the ozone hole and worsen climate change.
An unexpected and persistent increase in global emissions of ozone-depleting CFC-11 (DOI: 10.1038/s41586-018-0106-2) (DX)
Emissions of a banned, ozone-depleting chemical are on the rise, a group of scientists reported Wednesday, suggesting someone may be secretly manufacturing the pollutant in violation of an international accord.
Emissions of CFC-11 have climbed 25 percent since 2012, despite the chemical being part of a group of ozone pollutants that were phased out under the 1987 Montreal Protocol.
(Score: 2) by MichaelDavidCrawford on Thursday May 17 2018, @06:41PM
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