The data obtained during the observation show a significant reduction in the levels of chlorofluorocarbons (CFCs), which would have caused a reduction of about 20% in the deterioration of the ozone layer.
Washington - A group of scientists has been able to obtain for the first time "direct evidence" of the recovery of the ozone layer, through instruments designed by NASA and found on board the Aura satellite, informed sources from the aerospace agency of the United States.
The data obtained during the observation show a significant reduction in the levels of chlorofluorocarbons (CFCs), which would have caused a reduction of about 20% in the deterioration of the ozone layer.
"We have been able to see clearly that chlorine in CFCs is shrinking in the ozone hole, and that ozone loss is slowing down," said Susan Strahan, project manager and atmospheric scientist at NASA. the Goddard Special Flight Center of Greenbelt (Maryland).
Last year NASA reported that the size of the hole in September had been the smallest since 1988, with a maximum area of 19.6 million square kilometers, Efe reported.
The hole in the ozone layer was detected in 1985, at the end of winter in the Southern Hemisphere, when the reflection of sunlight implied reactions that included active chemical forms of chlorine and bromine created by humans, and that end with the ozone
Thirty years ago, the importance of the ozone layer led the international community to sign the Montreal Protocol on Substances harmful to the Ozone Layer in order to regulate this type of compounds.
It is expected that by the year 2070 the hole will have recovered the levels of 1980, since it is expected that the chlorofluorocarbons will continue to decrease.
Ozone acts as an essential element in the atmosphere, a natural protective layer at high altitudes in the face of ultraviolet radiation harmful to humans and plants.