Is there a hole in the O zone?
“There is no ‘tropical ozone hole’, driven by the author’s proposed electrons from cosmic rays or otherwise. The long term changes and year-to-year variability of the ozone layer in the tropical lower stratosphere (~15-20 km up) are well understood to be the result of both human-driven processes and natural drivers.
How big is the hole in the O zone?
9.6 million square miles
This year, NASA satellite observations determined the ozone hole reached a maximum of 24.8 million square kilometers (9.6 million square miles)—roughly the size of North America—before beginning to shrink in mid-October.
Where was the hole in ozone layer detected?
In the scientific journal Nature on May 16, 1985, three scientists from the British Antarctic Survey announce their detection of abnormally low levels of ozone over the South Pole.
Is there still a hole in the ozone layer 2020?
Scientists from the Copernicus Atmosphere Monitoring Service confirm that the 2021 Antarctic ozone hole has almost reached its end, following a season with a considerably large and prolonged ozone hole. Its closure will occur only a few days earlier than in 2020, which was the longest lived since 1979.
Where is the biggest ozone hole?
Antarctica
What we call the ozone hole is a thinning of the protective ozone layer in the stratosphere (the upper layer of Earth’s atmosphere) above Antarctica that begins every September. Chlorine and bromine derived from human-produced compounds are released from reactions on high-altitude polar clouds.
Can we close the ozone hole?
Scientists from the Copernicus Atmosphere Monitoring Service (CAMS) are ending 2021 with an announcement worth celebrating: the 2021 Antarctic ozone hole has finally closed. This ozone hole was once larger than Antarctica and reached its maximum size on October 7th.
Why is the ozone hole a concern?
Ozone depletion is a major environmental problem because it increases the amount of ultraviolet (UV) radiation that reaches Earth’s surface, which increases the rate of skin cancer, eye cataracts, and genetic and immune system damage.
Can you smell the ozone?
Ozone has a distinctive smell that humans can detect even in small concentrations — as few as 10 parts per billion. Here are some of the ways the smell of ozone is described: Metallic. Like a burning wire.