Our Earth receives 174 petawatts (PW) of solar radiations at the upper atmosphere, out of which almost 30% is reflected back to space whereas the rest is absorbed by clouds, oceans and land masses.
The Earth’s land surface, oceans and atmosphere that absorb solar radiation, raises their temperature. This causes warm air that contains evaporated water from the oceans to rise, causing atmospheric circulation or convection.
The water cycle gets completed when the air reaches a high altitude, where low temperature prevails, and the water vapor condenses into clouds, which rain onto the Earth’s surface.
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Effects Of Global Warming
There are multiple effects of global warming, some which we do see today, and some that will appear more...
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by noorJanuary 23, 2010
There are many causes that lead to Global warming, with each of the reasons contributing more to the increasing intensity of the climate change that has affected our planet.
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by noorJanuary 3, 2010
Solar energy is extremely important for us to survive. Besides helping us to stay warm, and enabling other organisms to survive, it is used in the commercial power production as well.
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by noorOctober 23, 2009
Natural gas is mostly promoted as part of the solution to climate change by the gas industry. Although it is non-renewable, it is a plentiful energy source. However, according to some experts, its contribution to global warming is only slightly less than that of coal and oil.
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by batoolSeptember 25, 2009
we need to save the energy by using alternatives and other manners to save the precious fossil fuels. For example we save electricity by turning off lights and appliances at homes when not in use.
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by mudassirSeptember 18, 2009
Energy projects for 2050 propose the earth will require between 28-35 terawatts (TW) per year, increasing from approximately 13TW in 2000. Nuclear will surely be an element but 8 TW of atomic power requires 8000 new powerhouses, or 1 fresh plant for each 1.4 days. Still the most hardcore advocates of the atom do not believe that is potential to occur.
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by mudassirSeptember 16, 2009
Latest wind farms are causing less bird deaths perhaps because the turbines are above from ground and placed further apart. And just for comparison’s sake, analyses indicate that a lot more birds die hitting cars and constructions than go in turbine blades.
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