WHAT IS GLOBAL WARMING?

GLOBAL WARMING

• The gradual slow rise in the temperature of the earth due to emission of excess quantities of radiation and trapping gases is called the global warming.
• The green house gases absorb the radiated heat or re- radiated rays of sun and re emits to the earth's surface again to maintain optimum temperature at the earth's surface in troposphere. This is called the green house effect. But due to raid industrialization and population growth and transportation, the rate of emission of green house gases especially carbon dioxide and methane is increasing and this phenomena results in a slow and gradual rise in temperature. Thus, the excess green house gases is responsible for global warming.

Effects of global warming 

1. Effect of global warming on climate :

Due to increase of average global temperature, water from various sources on earth may evaporate more rapidly due to this phenomena, the amount of rain fall may increased. However this phenomena will not occur evenly in all places. Some place may be rainfall heavily and some places suffering drought. In some region summer may be hotter and prolonged and winter becomes warmer and shorter.

2. Effect of global warming on sea water level :

When the global temperature increases, the ice caps and glaciers region of earth may be melted partially. The floating ice on water of sea also get melted. Due to this phenomena, The overall level of sea may be submerged into water and population at coastal area should be migrate.

3. Effect of global warming on agriculture :

An increase in the amount of carbon dioxide may increases the photosynthesis phenomena of plants so it will be increase in crop as well as but the high temperature due to green house gases can adverse effect on dry soil. It will decrease the fertility of soil and on the other hand, due to heavy rain, soil may be get erosion and due to drought the crop may be get deterioration.

4. Effect of global warming on marine organisms:

Due to increased in temperature, the ice caps and glaciers melts and as a result the volume of sea water will be expand. This expansion reduces concentration of salt and change the PH value of sea water. This change is not suitable for various existence living organisms and they get disturbed.

5. It will be results into acid rain which affect eco system.

6. Depletion of ozone layer.

7. The existing precipiration pattern get disturbed.

8. Change in climate, humidity and weather due to this ecological imbalance occurs.

Steps to control global warming :

1. Reduction in consumption of fossil fuels such as coal and petroleum.
2. Change the conventional energy generate system. Increase the use of renewable sources to generate electricity.
3. Replace the fuel engines by electric engines.
4. Stop deforestation and grow the trees as per ratio required in area.
5. Increase efficient use of solar energy.
6. Make proper formation for industrial effluents.
7. Check permissible values of gases which is escape by the industries.
8. Plan appropriate design for recovery of green house gases.