Explanations:Tamil Nadu, located on the Coromandel coast in the southeastern part of India, experiences a unique pattern of rainfall influenced by the monsoon system. The monsoon is a seasonal wind system that brings significant rainfall to the Indian subcontinent. The monsoon season in India is divided into two main parts: the southwest monsoon and the northeast monsoon.
The southwest monsoon, which typically occurs from June to September, brings heavy rainfall to the western coast of India. However, Tamil Nadu, being on the eastern coast, does not receive significant rainfall from the southwest monsoon. Instead, the northeast monsoon, which occurs from October to December, is the primary source of rainfall for Tamil Nadu. This monsoon is also known as the retreating monsoon because it is the period when the southwest monsoon is retreating from the Indian subcontinent.
The northeast monsoon is characterized by winds that blow from the northeast, bringing moisture from the Bay of Bengal. These winds are responsible for the majority of the rainfall in Tamil Nadu, particularly in the southern and eastern parts of the state. The retreating monsoon, which follows the northeast monsoon, also contributes to the rainfall in Tamil Nadu, especially in the northern and central parts of the state.
Western disturbances, on the other hand, are weather systems that originate in the Mediterranean region and move eastward, bringing rain and snow to the northwestern parts of India, particularly to the states of Punjab, Haryana, and parts of Rajasthan and Uttar Pradesh. These disturbances are not a significant source of rainfall for Tamil Nadu, which is located much further south and is not affected by these weather systems.
Therefore, the statement that Tamil Nadu receives most of its rain from Western disturbances in the winter season is incorrect. The primary sources of rainfall for Tamil Nadu are the northeast monsoon and the retreating monsoon, which bring significant rainfall to the state during the late fall and early winter months.