Ozone at South Pole
Why was the ozone destroyed in the Antarctic first?
The Antarctic has conditions that are not found anywhere else to
the same degree and are good for destroying ozone. During the Antarctic winter
and spring a belt of winds blows around the continent and keeps the air in one
place and prevents air from warmer climates from mixing in. Because Antarctica
is land, the extremely cold temperatures needed to form the special kinds of
clouds that help to destroy the ozone are found there. These two factors are
believed to be the main reason why ozone depletion is worst in Antarctica.
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Update: June 2012