Mysterious Rise in Emissions of Banned Ozone-Eating Chemicals Was Discovered and Scientists Are Shocked

1175

Scientists have detected an unexpected rise in atmospheric levels of banned chemicals which can cause holes in the ozone layer and nobody knows where they came from.

Follow Nexter.org to know more.

Ozone-destroying emissions

Mysterious rise in emissions of ozone-damaging chemical is likely emanating from somewhere inside of east Asia.

Chlorofluorocarbons were once considered a marvel of modern chemistry, and they were used in a wide range of products, they were also used as propellants in aerosol sprays and in solvents. However, in 1987, an international team of scientists proved that the emissions of such chemicals were actually harming the environment, particularly the ozone layer. By the end of the year, the Montreal Protocol was signed in a global effort to ban the products and heal the ozone layer.

By 2010, the production of trichlorofluoromethane (CFC-11), the second most abundant CFC controlled by the Montreal Protocol, was believed to be completely halted.

A new study published this week in the journal Nature finds that global CFC-11 emissions are on the rise again.

“It’s the most surprising and unexpected observation I’ve made in my 27 years” of measurements, said study lead author Stephen Montzka, a research chemist at the National Oceanic and Atmospheric Administration.

“Emissions today are about the same as it was nearly 20 years ago,” he said.

“In the end, we concluded that it’s most likely that someone may be producing the CFC-11 that’s escaping to the atmosphere. We don’t know why they might be doing that and if it is being made for some specific purpose, or inadvertently as a side product of some other chemical process,” said Stephen Montzka.

Possible source of the emissions

Measurements from a dozen monitors around the world suggest the emissions are coming from somewhere around China, Mongolia and the Koreas, according to the study. The chemical can be a byproduct in other chemical manufacturing, but it is supposed to be captured and recycled.

Either someone’s making the banned compound or it’s sloppy byproducts that haven’t been reported as required, Montzka said.

ozone-layer-infographic

Source: helpsavenature

In the stratosphere, roughly seven to 25 miles above Earth’s surface, the ozone layer acts like sunscreen, shielding the planet from potentially harmful ultraviolet radiation that can cause skin cancer and cataracts, suppress immune systems and also damage plants.

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


MORE HOT NEWS

Summary
Mysterious Rise in Emissions of Banned Ozone-Eating Chemicals Was Discovered and Scientists Are Shocked
Article Name
Mysterious Rise in Emissions of Banned Ozone-Eating Chemicals Was Discovered and Scientists Are Shocked
Description
Scientists have detected an unexpected rise in atmospheric levels of banned chemicals which can cause holes in the ozone layer and no one knows where are the came from.
Nexter.org
Nexter.org
Nexter.org
/wp-content/uploads/2018/04/logo_nexterbg.jpg

Comments are closed.

More News from Nexter