Greenhouse Effect and Global Worming
Greenhouse effect and global warming meaning increasing the global temperature of the world which trapping heat from the earth’s surface by mainly carbon dioxide and other gas molecules (methane, CFC, ozone, etc) which warming the earth’s atmosphere and causes for climate change. The contribution and effect of different greenhouse gases are different and their solutions to save our environment from global warming are the challenge today. The definition of greenhouse comes from the fact that the effect used in horticulture for the upbringing of green plants in the small glass sheet houses. Since the glass sheet and roof allows the short wavelength of heat comes from the sunlight to go into the greenhouses freely and trapping these heat coming form object of houses.
How does the Greenhouse Effect Work?
There is the protective layer of ozone gas molecule in the atmosphere at hight between 15 km and 60 km. The thicket layer of ozone exists at the hight of 23 km from the surface of the earth. Hence the blanket of carbon dioxide exists in the lower part atomosphere. The harmful electromagnetic spectrum like UV-light coming from sunlight shielding or absorbing by the ozone layer but visible or infrared rays pass through the layer and fall on the earth’s surface. Since the infra-red spectrum has the heating effect on heating earth and various particles of earth.
But the long wavelength of particles comes from the soil, plants and other contents of greenhouses do not allow to go out from the houses easily. Therefore, this trapping of heat or electromagnetic radiation raises the temperature inside the greenhouse.
Greenhouse Gases Contribution to Global Warming
The gases which trapping the heat or IR radiations spectrum come from earth atmosphere are called greenhouses gases in environmental or chemical science. Carbon dioxide, methane, chlorofluorocarbon, ozone, nitrous oxide, hydrofluorocarbon, PFC, sulfur hexafluoride, water vapor, etc are the main gases for increasing global temperature. Hence the contribution to global warming of these greenhouse gases given below table.
|Carbon dioxide (CO2)||50%|
|Nitrous oxide (N2O)||4-5%|
|Water vapor||≈ 2%|
Importance of the Greenhouse Effect
The greenhouse effect in learning chemistry or biological chemistry very important because this suggested the existence of life on the earth’s atmosphere. Due to the presence of these gas layer in the atmosphere does not allow heat rays to go out of the atmosphere. Hence the temperature of the earth’s atmosphere increases. The rise in temperature of earth atmosphere very important for existence on earth. Because without heating the whole earth would be converted into a cold planet, consequently, we are not able to live a normal life.
Definition of Global Warming
Carbon dioxide contributes 50% of our greenhouse gases. When the atmosphere contains too much quantity of carbon dioxide, the effect of heating considerably rises. Hence the excess quantity of carbon dioxide or other greenhouse gases causes or warming the global temperature by climate change.
- This too much rises temperature melt snow mountains of our environment which floods the low lying areas of our earth.
- This also changes the biological activity of oceans and the patterns of cropping. Therefore, the presence of excess carbon dioxide in the atmosphere brings about climate change.
Global Warming Solutions
We have already said that air is polluted by the presence of carbon dioxide, nitrogen dioxide, sulfur dioxide, ozone, and unburn hydrocarbon, CFC, HFC, etc. Some of the pollutants cause global warming or greenhouse gases but some are polluted soil by acid rain which decreasing the pH of eath soil and other harmful effects on the earth’s environment. Therefore, these pollutants prevented by following solutions,
- By adding lead tetraethyl to the petrol or by the catalytic oxidation of CO and hydrocarbons with the chemical element platinum catalyst. This method uses to save air from harmful gases released by the vehicle engines.
- Balancing the quantity of carbon dioxide present in the earth’s atmosphere by growing plants. This method removes greenhouse gases from the earth’s atmosphere.
- By using smoke free energy like solar energy, wind energy, nuclear power, etc.
- By using electrostatic precipitators. Therefore, this method uses for removing carbon particles produces by burning fuels like coal and oil.
- Stop the use of cooling agents like chlorofluorocarbon.
- By using tall chimneys. The use of tall chimneys in homes and factories can effect the concentration of greenhouse gases at ground level.