Antarctic Ozone Hole Reduces in Size
A recent report has confirmed the size of ozone hole above the Antarctic to 8.2 million square miles (21.2 million square kilometers). It was in 2000 that it reached 11.5 million square miles (29.9 million square km), the largest gap size ever recorded.
No matter Ozone is being treated as a pollutant on Earth's surface; it has the tendency to push back ultraviolet radiation into space, thereby protecting Earth from harmful rays. It's basically due to the presence of man-made chemicals called chlorofluorocarbons (CFCs), that the protective layer has generated a hole.
It is believed by researchers of the National Oceanic and Atmospheric Administration (NOAA) that the hole formed in September and October has reduced this year perhaps because of the warmer air temperature above the South Pole. "It happened to be a bit warmer this year high in the atmosphere above Antarctica, and that meant we didn't see quite as much ozone depletion as we saw last year, when it was colder", said Jim Butler with NOAA's Earth System Research Laboratory in Boulder, Colo.
Though there has been check put on the use of ozone-depleting chemicals since the past 25 years, there is a lot to be done before Antarctic ozone layer is fully recovered.
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