¥Sept: As sunlight returns in early Spring, stratospheric temperatures begin to rise.
¥ Clouds
then evaporate, releasing chlorine
atoms into air that were ice locked.
¥ Free
chlorine atoms begin destroying
ozone.
¥Oct: Lowest levels of ozone are detected in early spring.
¥Nov: Vortex weakens and breaks down, allowing ozone poor air to spread.
