Greenhouse effect and global warming Presentation,it's causes and it's mitigation

Greenhouse effect and global warming Presentation,it's causes and it's mitigation

1. GREENHOUSE EFFECT AND GLOBAL WARMING Presented By- Paramjeet Patra 2419D033

2. INTRODUCTION The greenhouse effect is a process that occurs when gases in the earth’s atmosphere trap the sun’s heat. It makes the earth a comfortable place to live. Without atmosphere the temperature of earth is around 20 to 40 dc. But the excess warming earth is uncomfortable as well as danger to the organism and this excess warming of earth is known as global warming. The increasing temperature day by day is a warning to the organism.

3. MECHANISM As you might expect from the name, the greenhouse effect works like a greenhouse! A greenhouse is a building with glass walls and glass roofs used to grow plants such as tomatoes and tropical flowers. A greenhouse stays warm inside even during winter because the glass walls of the green house traps the suns heat. The greenhouse effect works much the same way on earth. Gases in the atmosphere such as CO2, water vapour trap heat making the earth much warmer and these gases are called greenhouse gases.

4. What are these gases The major greenhouse gases are:- Water vapour Carbon Dioxide (CO2) Nitrous oxide (NO2) Methane (CH4) Fluorinated gases (HFCs, PFCs, SF6 )

5. Causes of Global Warming 1.Deforestation:- This Photo by Unknown Author is licensed under CC BY-ND Plants are the main source of oxygen. They are responsible for increasing the amount of oxygen and decreasing Carbon dioxide. Thereby they are maintaining environmental balance. Forest are being depleted for many domestic and commercial purposes led to an environmental imbalance, thereby giving rise to Global warming.

6. 2.Industrial Development:- With the advent of industrialisation the temperature of the earth has been increasing rapidly . The harmful emission from the factories add to the increasing temperature of the earth. Burning of the coal in several industries releases a lot amount of heat add to the increasing temperature of the Earth.

7. 3.Chlorofluorocarbon - With the excessive use of air conditioner and refrigerators, human have been adding CFCs into the environment which affects the atmospheric ozone layer. The ozone layer protects the earth surface from the harmful UV rays emitted by the sun. the CFCs has led to ozone layer depletion making way for the UV rays, thereby increasing the temperature of the earth.

8. 4.Agriculture :- Various farming activities produces carbon dioxide and methane gas these add to the greenhouse gases in the atmosphere and increase the temperature of the earth. Changes in land use also a cause for global warming.

9. 5.Earth’s own feedback loop:- As the atmosphere warms, it is able to hold more water, which is already the most abundant greenhouse gas. This creates a feedback loop that accelerates global warming. 6.Variations in the Sun’s intensity:- The Earth receives its warmth from the sun, so it’s reasonable to suspect that our home star may be one of the reason for global warming. Although the amount of energy coming from the Sun does vary and may have been responsible for warming in the past, however, NASA has ruled this out as a cause of the current warming trend.

10. EFFECT OF GLOBAL WARMING:- Here are some of the effects of Global warming:- Rise in temperature Climate change Threats to the Ecosystem Loss of Natural habitat Spread of diseases Rise in sea level Shortage of drinking water Water pollution Increase in rainfall and wind speed Social tension.

11. Mitigation of Global Warming:- We can control or minimize the global warming in some extent in the following ways:- Reduce, Reuse , Recycle. Plantation. Use less heat and Air conditioning. Reduction in greenhouse gases Climate engineering Education Buy energy-Efficient product. Encourage other to conserve. Adaption.

12. By Paramjeet Patra D.D.(auto) College, Keonjhar, odisha, India