NASA scientists said Monday that the hole in the ozone layer of the Earth has shrunk to its smallest size since it was first discovered in the 1970s.
A news release from the agency reports that the hole, which naturally grows and shrinks each year due to Arctic temperatures, has narrowed to its annual low at the end of September and October, surpassing record levels recorded in years past.
The hole is now 3.9 million square miles, according to NASA's lowest record level since the hole was first discovered in 1982. Scientists at the NASA headquarters in Greenbelt, Md., Said the change in temperatures leading to warmer air in the Arctic, which contributes to the shrinking of the ozone gap, is associated with the normal annual phenomenon and
"This is great news for ozone in the Southern Hemisphere," says Paul Newman, chief Earth scientist science in the facility. "But it's important to recognize that what we're seeing this year is due to warmer stratospheric temperatures. This is not a sign that atmospheric ozone is suddenly heading towards recovery. "
" This year, the ozone measurements at the South Pole do not show parts of the atmosphere where ozone is completely depleted, "added Brian Johnson, an atmospheric scientist with the Boulder Laboratory, Colorado, Colombia, National Oceanic and Atmospheric Administration
Scientists hope that a dangerous hole in the ozone layer of the Earth, which contributes to increasing the negative effects of ultraviolet rays around the world, will dissipate after the decision to ban ozone-depleting chemicals, some of which remain in the atmosphere through The 70's years of the last century.