The hole in the ozone layer over Antarctica is healing.


Earth’s ozone layer is HEALING! A massive decline in damaging chemicals in the atmosphere reverses troubling changes in air currents around the Southern Hemisphere.

Researchers discovered reversing changes to the flow of winds over the southern hemisphere.

The most significant impact are often seen within the hemisphere airstream It had been reportedly moving further south thanks to ozone depletion, but that appears to be reversing.

Scientists from the University of Colorado Boulder claim the healing may be an end in part to a ban on ozone-depleting substances (ODS) within the 1980s. However, the lead author of the study, Antara Banerjee, says this alteration could also be only temporary. She points out the impact of rising CO2 levels and more ODS coming from China.

Before the 2000s, the mid-latitude upper-atmosphere wind had been gradually moving towards the South Pole . Meanwhile, another hurricane-causing airstream was expanding. This was causing changes in rainfall patterns and ocean currents within the hemisphere . As a result, countries like Australia suffered severe droughts.

With a range of computer simulations, researchers showed that the jet stream stopped moving south at the same time as the ozone hole began healing.

If the upper-atmosphere wind reverses its southwards movement, it could bring back rains to the affected countries, preventing further droughts.

In 2019, the Antarctic hole reached its smallest annual peak on record, since it had been discovered in 1982. However, this is often believed to be a short-lived fix. Scientists reckon this record could also be caused by unusually mild temperatures therein layer of the atmosphere.

Additionally, the team working on the study confirms that there has also been a surge in ozone-depleting chemicals coming from China’s industrial regions.

Banerjee says:

“We term this a “pause” because the poleward circulation trends might resume, stay flat, or reverse. It’s the tug of war between the opposing effects of ozone recovery and rising greenhouse gases that will determine future trends.”

She adds that the major discovery her team made was proof that a global protocol like the one in Montreal that banned ODS can pause or reverse environmental harm. The whole study is published in the journal Nature.

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