The ozone hole is the largest it's been since 2015, but overall it's still decreasing.
The ozone hole that forms yearly over Antarctica has grown for the third year in a row. At nearly 10 million square miles , the ozone hole is the largest it's been since 2015."All the data says that ozone is on the mend," Paul Newman, NASA Goddard Space Flight Center's chief Earth scientist, told the Associated Press .
Scientists discovered the thinning ozone layer over Antarctica in the early 1980s. Although ozone is created and destroyed naturally in the stratosphere, human-driven pollution destroys ozone faster than it can form. In particular, industries that use chlorine or bromine, like refrigeration and air conditioning, destroy ozone at alarmingly high rates. In the stratosphere, chlorine molecules react with ozone to create one chlorine monoxide molecule and one O2 molecule.
The ozone hole was first observed in the early 1980s and reached its largest extent in 2006, according to NASA. This year’s ozone hole, which peaked on Oct. 5, was the biggest recorded since 2015. But scientists aren’t too concerned.
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