Why tamil nadu coast receives winter rainfall?
During the winter season, north-east trade winds prevail over India. They are off-shore winds that blow from land to sea and usually do not bring rain. Because of India’s topography however they change their direction and become northeasterly over the Bay of Bengal where they pick up moisture. They then blow towards the Tamil Nadu Coast which receives winter rainfall due to these winds...........:)
Why tamil nadu coast receives winter rainfall?
The Tamil Nadu coast receives winter rainfall due to various factors. Some of the main reasons are discussed below:
Monsoon Winds
The northeast monsoon winds, also known as the winter monsoon, blow over the Bay of Bengal and bring rainfall to the Tamil Nadu coast. These winds are created by the difference in temperature between the land and the sea. The land cools down faster than the sea, creating a high-pressure system over the land and a low-pressure system over the sea. This causes the winds to blow from the high-pressure area to the low-pressure area, resulting in rainfall.
Topography
The Tamil Nadu coast has a unique topography that contributes to its winter rainfall. The Eastern Ghats and the Western Ghats run parallel to the coast, creating a funnel-shaped landmass. This topography forces the monsoon winds to converge over the region, causing heavy rainfall.
Sea Surface Temperature
The winter rainfall in Tamil Nadu is also influenced by the sea surface temperature. The Bay of Bengal is warmer than the Arabian Sea during the winter months, and this temperature difference attracts the northeast monsoon winds towards the Bay of Bengal. The warm sea surface temperature also contributes to the formation of convective clouds, which result in heavy rainfall.
Tropical Cyclones
The Tamil Nadu coast is prone to tropical cyclones during the winter months. These cyclones form over the Bay of Bengal and bring heavy rainfall to the region. The cyclones are created due to the combination of warm sea surface temperature, low-pressure systems, and the convergence of monsoon winds.
In conclusion, the Tamil Nadu coast receives winter rainfall due to the convergence of monsoon winds, unique topography, warm sea surface temperature, and the formation of tropical cyclones. These factors work together to create a perfect environment for rainfall during the winter months.
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