Ozone hole has changed. It changes every year with the CFC content in air.
The ozone hole in Antarctica was first observed by scientists from the British Antarctic Survey in the 1980s, particularly Joe Farman, Brian Gardiner, and Jonathan Shanklin. They noticed a significant depletion in ozone levels over Antarctica during their research expeditions.
The ozone hole was first identified by scientists from the British Antarctic Survey in 1985. They observed a significant thinning of the ozone layer above Antarctica. Subsequent research linked this ozone depletion to man-made chemicals like chlorofluorocarbons (CFCs).
The ozone issue has changed with time. The use of CFC first depleted the ozone but now it is stable.
Joseph Charles Farman is the British geophysicist who, together with Brian Gardiner and Jon Shanklin, published the discovery of the ozone hole over Antarctica. Their results were first published on May 16, 1985.--wikipedia
The ozone hole is mostly over Antarctica. It was first discovered in 1984.
Ozone hole is observed to be depleting. It is because of man made CFC's.
They did it in 1880. It is a layer of ozone molecules.
There is an ozone layer. Scientists have confirmed that.
Scientists hope the ozone layer will have recovered by around 2050.
Level of ozone has changed. It is variable through out the globe.
Ozone is present in the stratosphere of the earth's atmosphere. It is in this region that the scientists are concerned.
The scientists have discovered ozone hole due to technology. Advancements led them to find it.