They produced a static condition when the major natural mechanism
causing ozone variation over Antarctica is an intense atmospheric circulation system associated with the Circumpolar Vortex.
Not exact matches
It was assumed that UV was constant, which means measured
ozone variation had another
cause.
Although I claim to have narrowed the primary driver to solar effects on
ozone quantities and cloudiness you are free to ascertain whatever it is that
causes those solar
variations in the first place which is where some of your ideas can be slotted in.
The lower stratospheric response is the main
cause of the total
ozone variation.