All about Ozone Layer: Introduction, Benefits, Factors affecting it, Preservation, Bonus Point.

1. MANJOT SINGH, SHALAV GUMBER
Department Of Mechanical
Engineering.

2. Preservation

3. Contents
 Ozone Layer
 Benefits of Ozone Layer
 Ozone Layer Depletion
 Factors Depleting Ozone Layer
 Effects of Ozone Depletion
 How Can We Prevent Ozone Depletion
 Bonus Topic

4. Ozone Layer
 The term “Ozone Layer” refers to the ozone within
Stratosphere i.e. at 10-50 Kms. altitude from Earth’s
surface.
 Ozone is an irritating, corrosive, colorless gas with a
smell something like burning electrical wiring.
 In fact, ozone is easily produced by any high-voltage
electrical arc (Spark plugs, Tesla coils, arc welding
etc.).

5. Benefits of Ozone Layer
 Ozone helps to protect life on Earth by absorbing ultraviolet
radiation from the sun.
 It completely stops the penetration of UV-C rays and
eliminates most of the UV-B rays into Earth’s atmosphere.

6. 6

7. Depletion Of Ozone Layer
Ozone Layer in 1979 Ozone Layer In 2008

8. Factors Depleting Ozone Layer
 Chlorofluorocarbons (CFCs) : From soaps, spray
aerosols, insulating foams, ‘take-away’ containers and
cooling utilities such as refrigerators and air
conditioners.
 Ozone Depleting Substances (ODS) : Pesticides,
Industrial solvents, and halons used in fire
extinguishers.
 Other Chemicals : Other chemicals like Clx, Hox and
Nox.

10. Effects of Ozone Depletion
 Causes Skin cancer and Cataracts in Humans.
 UV rays can also lead to weakening of immune system.
 Extensive exposure to UV rays can lead to acceleration
of the aging process of your skin.

11. Contd……..
 UV Rays affects the growth of plants.
 UV radiation alters both sources and sinks of green house
gases in the biosphere.
 Acid rain is also produced due to ozone layer depletion.

12. How Can We Prevent Ozone
Depletion
 Don’t buy any products with CFCs.
 Check your fire extinguishers for “Hydrocarbons”.
 Dispose of old air conditioning units, refrigerators
that use CFCs to function.

13. Contd….
 Limit use of private vehicles.
 Use eco-friendly household cleaning products.
 Limit use of Pesticides.

14. Earth Overshoot Day

15. Contd….
 Earth Overshoot
Day (EOD) is the
calculated illustrative
calendar date on which
humanity's resource
consumption for the year
exceeds Earth's capacity
to regenerate those
resources that year.

16. Contd…..

17. Contd…..

18. Personal Overshoot Day
Calculated by Global Footprint Network