The Tamilnadu Coast receives Winter Rainfall ! Give Reason ! ( Three mark answer )
during the cold weather season,the north east trade winds prevails over the country . they blow from land to sea and hence,for most part of the country it is a dry season. the tamil nadu coast, however gets most of its rainfall from these winds as they reach there from sea to land..........
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1. During the winter season, the northeast trade winds prevail over the country. These winds blow from land to land and hence give no rain to the country.
2. However, before entering Tamil Nadu, these winds blow over the Bay of Bengal. Thus, they become moisture laden.
3. Once they enter land, the Eastern Ghats act as a barrier and Tamil Nadu coast gets winter rainfall.
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During the winter season, north-east trade winds prevail over India. They blow from land to sea and hence, for most part of the country, it is a dry season. However, the Tamil Nadu Coast receives winter rainfall due to these winds. This is because in this region these winds blow from sea to land, thereby carrying moisture along with them.
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1. The Arabian Branch and the Bay of Bengal branch during June doesn't come to Tamil Nadu because of the physical feature by which the state is surrounded, it prevents them to enter inside the state.
2. As, Tamil Nadu is in the coastal part of the country, the temperature variation is less experienced there due to which it doesn't heat up more during summers and hence on low pressure is created during that time which doesn't attract the Southwest monsoon winds or moisture carrying winds.
3. During October- November,the low pressure created in India due to Sun is shifted to Tropic of Capricorn in the Southern Hemisphere because of its apparent movement which creates high pressure in India and from here the monsoon starts retreating from India. But as the Tamil Nadu is under the influence of surrounded seas and oceans, the pressure remains same there. During the retreat of monsoon, the high pressure is created in Bay of Bengal which brings cyclone in the eastern parts of India like West Bengal, Orrisa etc.., and the North- eastern winds carries moisture from the Bay of Bengal the when this strike to Tamil Nadu's coast it brings monsoon there.
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