Jan 23 2009
GLOBAL WARMING
In the recent time the most deadly threat to the human civilization and the rest of the living world is the global warming, a consequence of long neglected environmental pollution and the environmental degradation. It is the slow gradual rise in the temperature of the earth that makes the nature instable and unpredictable. The excessive emission of the green house gasses such as CO2, CH4Â, NO etc are the main causes behind it and it is estimated that by 2030, the average global temperature will be risen by 1 to 3 degree Celsius.
Actually, the green house gasses and the water vapors in the air, form a gaseous blanket in the atmosphere which is transparent in case of short solar wavelength such as sunlight but reflects the longer wavelengths like heat. Thus, this gaseous layer can transmit the incoming solar radiation but traps and reflects the heat radiated by earth surface. As a result the atmosphere warms up and the progressive warming up of the atmosphere results into the global warming.
The global warming can affect the environment to a large extent and the adverse effects of the global warming are already being noticed all over the world. In some parts of the earth, the average rainfall has increased, in some parts the average rain fall has decreased and as a consequence some countries are suffering from droughts and some are from floods. In some countries the summer is prolonged and hotter but in some countries the winter is shorter and warmer. The ice caps and the glaciers of the Polar Regions are being melted partially, thus sea level is rising and it is measured that if the temperature increases by 3 to 5 degree Celsius then vast lowland and costal areas will be flooded.
If you are interested to study more on it, then I have a number of websites for you. To know more about the global warming and the stunning effects of it and how to combat it, do visit the following websites:
