EVERYDAY SCIENCE

Detailed explanation-1: -One example of ozone depletion is the annual ozone “hole” over Antarctica that has occurred during the Antarctic spring since the early 1980s. This is not really a hole through the ozone layer, but rather a large area of the stratosphere with extremely low amounts of ozone.

Detailed explanation-2: -The depletion of ozone is of higher order in these layers. The so called hole in ozone layers simply means that above some continents (specifically Antarctica, Asia and parts of South America) the mesosphere and stratosphere have lost their original level of ozone content.

Detailed explanation-3: -The ozone hole is not technically a “hole” where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic that happens at the beginning of Southern Hemisphere spring (August–October).

Detailed explanation-4: -ozone depletion, gradual thinning of Earth’s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities.

Detailed explanation-5: -In 2011 scientists noticed the amount of ozone in the Arctic stratosphere declined to levels low enough to be described as an ozone hole. This was linked to persistently cold temperatures and circling winds, known as the Arctic vortex, which prevented cold air from escaping the region.