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Global Circulation

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Submitted By sarvi1970
Words 289
Pages 2
It is know that on a given day, the different part of world has different weather condition. The variation of heat energy absorption of earth surface has major significance in climatic difference and indirectly for much diversity of biomes. Rotation of earth around the sun and spherical surface of the earth also plays a vital role on the temperature, climate on the earth surface.
The earth observes enormous amount of heat from the Sun by radiation and it radiates the equal amount of absorbed heat to the atmosphere. However the amount of heat absorption by the earth surface is not identical throughout the earth. The sun rays are reaching the earth surface almost perpendicular to the region near the equator. This intense heat energy absorbed per unit area is much which causes tropics more warm then other part of the earth. The sunrays are more spread in temperate latitude compared to tropics. The less heat absorption in the temperate latitude makes this region less warm than tropics.
Temperature change in the poles happens in an annual cycle because of the inclination of earth axis with respect to the path around the sun. In high latitude of northern and southern hemisphere experience a seasonal shift in the length of day due to the shift in the solar energy due to the shift of the earth axis.
Heating of the earth surface and atmosphere drives circulation of the atmosphere and influences pattern of precipitation. The heat near the equator region causes the evaporation. It results the air warm and moist air. This warm air tends to move toward the poles and lose its temperature and condense. The condensation forms the cloud. This cloud causes the high precipitation in this region.

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