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AP Enviro



Unit 9

9.2 Reducing Ozone Depletion

1 min readmay 29, 2020

Jenni MacLean

Time for Change

In 1987 the Montreal Protocol was created in an attempt to phase out the production of chemicals responsible for the depletion of the ozone.  This international treaty encouraged the use of chemicals like hydrofluorocarbons (HFCs) that are much more reactive and will break apart before reaching the ozone layer.

Image courtesy of Pixabay

Due to the continuous creation of ozone in the stratosphere, the damage that was done will reverse over time. The Montreal protocol is one of the most successful international environmental treaties and was able to largely stop the depletion of stratospheric ozone.
Although hydrofluorocarbons (HFCs) were instrumental in stopping the depletion of the ozone layer, they have very high thermal retention properties and are very strong greenhouse gasses. 


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