“ A growing hole of problems”

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Presentation transcript:

“ A growing hole of problems” Ozone Depletion Sam Puck “ A growing hole of problems”

Definition and Types Destruction of the stratospheric ozone layer which shields the earth from ultraviolet radiation harmful to life. Ozone Depleting Substances: Chlorofluorocarbons Hydrochlorofluoracarbons Carbon tetrachloride Methyl chloroform

Locations The Antarctic ozone hole Consumption of ODS: North America Latin America Asia Africa Europe

Pollution Causes Items Containing ODS: Refrigerators Air Conditioners Fire Extinguishers Dry Cleaning Cleaning Solutions Electronic Equipment

Environmental Consequences Harm to human life Negative impacts to plant life Damage to Marine life Harm to other animal life Growing of the ozone hole and large scale ozone thinning

Conservation Efforts Use non-ozone depleting alternatives Regulation of imported and manufactured ODS Inspections to prevent or minimize refrigerant leaks Dispose of refrigerators, freezers, and air conditioning units properly Avoid household aerosols containing CFCs

Costs Costs Americans $2.9 to $5.4 billion in additional health costs Appliance disposals are $30-$100 Refrigerant leak detection (inspection): $75-$200 Refrigerant leak repair- $225-$1600 Natural refrigerant replacement- $160-$400

Applicable Legislation Clean Air Act Montreal Protocol on ODS Ozone Depleting Substances Regulation Environmental Code of Practice of Elimination of HCFCs Ozone Layer Protection Act of 1996

Extra Facts A decrease of 1% in the ozone layer can cause 5% increased cases of skin cancer. 1970’s research led to the discovery of the ozone hole. Ozone gases sit about 25-30 kms above Earth’s surface. CFCs are responsible for about 80% of ozone depletion. CFCs remain in the atmosphere for 20-120 years before being destroyed.

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Literature Cited http://environment.nationalgeographic.com/environment/global-warming/ozone-depletion-overview/ http://www.theozonehole.com/ https://www.epa.gov/ozone-layer-protection/ozone-depleting-substances http://www.bcairquality.ca/101/ozone-depletion-impacts.html http://www.epd.gov.hk/epd/english/environmentinhk/air/ozone_layer_protection/wn6_info_olp_ue_c.html

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