The Chota Nagpur plateau region receives the majority of its rainfall through which of the following wind system?
Show answer & explanation
Correct answer: A
Explanation
Answer: Arabian Sea branch of South-West monsoon winds
Explanation:
The Chota Nagpur Plateau, which extends primarily across Jharkhand and neighboring states, receives the majority of its rainfall from the Bay of Bengal branch of the Southwest Monsoon. Although two branches of the monsoon (the Arabian Sea branch and the Bay of Bengal branch) are active in India, the plateau's geographical location places it in closer proximity to the Bay of Bengal. The local topography compels the monsoon winds to rise, resulting in heavy orographic (mountain-induced) rainfall. The Arabian Sea branch becomes drier after crossing the Western Ghats, and by the time it reaches this region, its moisture content has significantly diminished. The average annual rainfall in the Chota Nagpur Plateau region ranges approximately between 1000 mm and 1500 mm.
Additional Points:
The highest peak of the plateau is Parasnath, which exerts a localized influence on the distribution of rainfall.
Potential Exam Questions and Answers:
Question: What is the highest peak of the Chota Nagpur Plateau?
Answer: Parasnath (Jharkhand).
Question: Which branch of the monsoon brings rainfall to India first?
Answer: The Arabian Sea branch (along the Kerala coast).