EFFECT OF ANTARCTIC OZONE HOLES OF 1988, 1989, AND 1990 ON LOWER LATITUDES OF THE SOUTHERN-HEMISPHERE

The October depletions in the Antarctic ozone spread to lower latitude s in early November in 1988, in late November in 1989, and in late Oct ober in 1990. The depletions were 10-15% for latitudes up to 40 degree s S and smaller thereafter, and almost negligible at 25 degrees S and beyond. However, for the southern hemisphere, the normal seasonal chan ges at middle latitudes from October to December are much larger (abou t 20%). Also, there are superposed fluctuations of about 20% over a fe w (5-6) days.