Source of Wind Energy

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windThe radiation from the sun is absorbed by land and the sea and in turn leading to the warming of the surrounding air. As warm air rises and cool air descends, convection current is produced due to the difference in the temperature gradients and hence wind is developed. For example at the equator, the solar radiation causes warm air to rise allowing cool air from the north and south to descend in.  The rotation of the earth determines the regions where high and low winds occur over an extensive area in the global scale. The seasonal variations such as winter, spring and summer also affects wind reliability because it dictates the speed and strengths of winds. Wind energy can therefore be effectively harnessed in regions where there are strong and reliable winds (Andrews & Jelley, 2007).

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