Lecture 11: Ozone Hole Depletion

Ozone Production and Destruction

Ozone Distribution

Other Ozone Destruction Processes

The Chlorine Catalytic Cycle

The Chlorine Catalytic Cycle

The Nitrogen Catalytic Cycle

Chlorine Sources

Man-Made Sources for CFCs

Polar Stratospheric Clouds (PSCs)

How PSCs Affect Ozone Hole

Two Factors for the Ozone Hole

Why No Ozone Hole in Artic?

The Polar Vortex

The 1997 Ozone Hole