Where was the hole in the ozone layer located?

Where was the hole in the ozone layer located?

Where was the hole in the ozone layer located?

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.

For which location does the ozone hole last?

By summertime, stratospheric air from lower latitudes is able to penetrate the polar latitudes, and thereby replenish the ozone layer above Antarctica. Hence, there is a seasonal cycle to the ozone hole over Antarctica with the lowest ozone levels recorded in late September and early October.

What is ozone hole where is it located how is it formed?

The “ozone hole” occurs over Antarctica in the very early spring when weather conditions and a lack of sunlight which produces ozone cause the stratospheric ozone layer in this region to become very thin.

How did the hole in the ozone layer form?

About 20 years ago, scientists realized that the ozone layer over Antarctica grew thinner during the winter and spring. This thinning became known as the ozone hole. It resulted from chemicals called chlorofluorocarbons (CFCs) used in aerosol spray cans and refrigerators.

Why ozone hole is present in Antarctica?

The very low temperatures of the Antarctic stratosphere create ice clouds called polar stratospheric clouds (PSCs). Special reactions that occur on PSCs and the relative isolation of polar stratospheric air allow chlo- rine and bromine reactions to produce the ozone hole in Antarctic springtime.

What caused hole in ozone layer?

The ozone layer, which lies high in the atmosphere, shields us from harmful ultraviolet (UV) rays that come from the Sun. Human activities effectively punched a hole in it, through the use of gases like chlorofluorocarbons (CFCs) in spray cans and refrigerants, which break down ozone molecules in the upper atmosphere.

What causes holes in the ozone layer?

What does a hole in the ozone layer do?

Because the ozone layer normally blocks ultraviolet (UV) light, an ozone hole allows more UV light than usual to reach the surface. However, the additional energy added to the Earth system from the ozone hole is so small that it couldn’t be responsible for the warming trend that’s been occurring.

What is the current status of the ozone hole 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.