How does global warming accelerate ozone depletion?

Answer 1

It doesn't. They are unrelated.

Ozone depletion is related to the release of fluorocarbons and chloroflourocarbons that make their way into the upper atmosphere. Essentially all of these chemicals are man-made.

Global warming comes as a combination of natural effects (sun cycles, volcanic eruptions, etc.) and anthropogenic effects (carbon dioxide emissions, methane emissions, deforestation, etc.). Fluorocarbons and chloroflourocarbons might slightly increase global warming, but global warming has little to do with ozone depletion.

There is a slight possibility that if the atmosphere is warmer that the rate of diffusion of ozone depleting chemicals from the lower atmosphere into the upper atmosphere (where they influence ozone creation and destruction) might increase - but at the same time a warmer atmosphere would inhibit the formation of ice crystals in the upper atmosphere which are important as sites where the ozone depleting reactions occur, so the two effects would largely offset each other.