How come the ozone layer has a hole, can't the existing ozone diffuse so that the whole layer decreases?

The ozone depletion zone (not really a hole) was formed as a result of chemical reactions from gases that we released (but not from atomic bombs!).





There is diffusion going on, however at the poles the jet streams don't reach up there well enough to mix the air and that limits how much diffusion and mixing can happen.





Check out the NOAA website which will give you lots of good scientific information on the subject.How come the ozone layer has a hole, can't the existing ozone diffuse so that the whole layer decreases?
The depletion appears in the ozone layer was a result of the 2 atomic bombs that were dropped on Hiroshima %26amp; Nagasaki during WWII in Japan on the 6th %26amp; 9th of August in 1945.








It would take half of a millennium to recover the loss of ozone layer. If the earth were to lose all the ozone layer (HOPEFULLY NOT!!!), we and all the living organisms on this planet would be fried to death by UV radiation





That's why the ozone layer is VERY IMPORTANT for the existence of all life forms on Earth.