Ozone Takes a Nose Dive After The Eruption of Mt. Pinatubo

After the eruption of Mt. Pinatubo, ozone concentrations outside the polar regions are 4% below levels typical of the past 12 years, and 3% below the very lowest level seen in those years. The debris from the eruption may have lowered ozone levels by changing the wind patterns in the stratosphere, combined with chemical effects. Levels between 30 and 60[degree]N latitude were 9% below normal.