more scary stuff

[PvK]

Hmm, at those links I see links of erruptions to ozone depletion, but also:

First site (NASA):

"Climate change combined with aftereffects of large volcanic eruptions will contribute to more ozone loss over both poles," Tabazadeh said. "This research proves that ozone recovery is more complex than originally thought."

"... the early and rapid growth of the Antarctic ozone hole in the early 1980s may have been influenced in part by a number of large volcanic eruptions ..."

Second site (ozonehole.com):

"However, man-made chemicals such as CFCs or chlorofluorocarbons are now known to have a very dramatic influence on Ozone levels too. CFCs a were once widely used in aerosol propellants, refrigerants, foams, and industrial processes."

Third site (Cambridge):

"despite the provisions of the Montreal Protocol, the atmosphere will contain enough CFCs that the ozone layer will be at risk of other events of severe ozone loss at mid-latitudes for at least fifty years."

Fourth site looks to be only about volcanoes anyway.

That is, it would be easy to misinterpret what Fryon said, to think that human pollution is not a contributing cause to ozone depletion. It would seem it is a cause, in addition to volcanoes.

PvK