NASA scientists said on Monday that the hole in the Earth's ozone layer has shrunk to the smallest size since it was first discovered in the 1970s.
A press release from the agency reported that the hole is naturally growing and shrinking each year due to Arctic temperatures, plunging to its annual low in late September and October, surpassing record lows in recent years.
The hole now stands at 3.9 million square miles, the lowest According to NASA scientists at NASA's Greenbelt headquarters, Md., Said that the temperature change, which leads to warmer air in the Arctic, contributes to the shrinkage of the ozone gap , related to the normal annual phenomenon is not climate change.
"It's great news for ozone in the southern hemisphere," said Paul Newman, chief geoscientist at the facility. "But it is important to realize that what we see this year is due to warmer temperatures in the stratosphere, which is not a sign that the ozone in the atmosphere is suddenly recovering quickly."
"In this During the year, ozone probe measurements at the South Pole did not reveal any parts of the atmosphere where ozone was completely degraded, "added Bryan Johnson, a scientist at the National Oceanic and Atmospheric Administration in Boulder, Colorado, laboratory.
Scientists hope that the ozone layer's dangerous hole the earth, which contributes to increased negative effects of ultraviolet rays around the world, will disappear after the decision to ban ozone-damaging chemicals, some of which remain in the atmosphere, in the 1