Scientists from MIT confirm that the hole in the ozone layer above Antarctica has shrunken by about 4 million square kilometers. This proves that the worldwide boycott of CFCs is yielding positive results, seen almost 30 years after the Montreal Protocol of 1987.
For a very long time, we have ignored the consequences of the production and use of ozone-depleting substances (ODS). In 1987 the Montreal protocol has called upon all nations to reduce that and finally we have results! Nearly after 30 years scientists from MIT have confirmed that the ozone hole over Antarctica is starting to heal.
“We can now be confident that the things we’ve done have put the planet on a path to heal,” said MIT lead researcher Susan Solomon, who also happens to be the first to distinguish the conditions of temperature and sunlight under which chlorine could eat away at the ozone layer, back in 1986.
The hole was growing the whole time and in 2015 it reached a record depth what left scientists puzzled. When they analyzed the paper they found the problem.
“Why I like this paper so much is, nature threw us a curveball in 2015,” says Ross Salawitch, professor of chemistry and biochemistry at the University of Maryland. “People thought we set a record for the depth of the ozone hole in October 2015. The Solomon paper explains it was due to a specific volcanic eruption. So without this paper, if all we had was the data, we would be scratching our heads — what was going on in 2015?”
WE NEED TO KEEP UP THE GOOD WORK
“This is a reminder that when the world gets together, we really can solve environmental problems,” Solomon said. “I think we should all congratulate ourselves on a job well done.”
The hole is estimated to be completely and permanently closed by 2050, provided the world keeps progress steady.
source - futurism.com