Model Question and Answers for APSC | The Tibetan Plateau plays an important role in the system of Monsoon over the Indian subcontinent. Explain
Ans : Landforms play a major role in deciding the path of propagation as well as the intensity of rainfall, as most of the rainfall in India is orographic in nature. The Himalayas plays a major role in the genesis of the monsoon as well as monsoon breaks. Tibet Plateau is an enormous block of high ground that acts as a formidable barrier as well as a heat source.
The role of the Tibetan Plateau in influencing the Indian
1. Tibetan Plateau receives 2-3 degrees more insolation than the neighbouring areas thus creating a low-pressure region, which gets coupled with the Mascarene Highpressure area in the Indian Ocean.
2. Also, the heating of air above Tibet Plateau also weakens the western subtropical jet stream south of the Himalayas with the resultant northward displacement of the jet stream from India.
3. To fill this low pressure, winds from the high-pressure area of the Arabian Sea begin to blow towards the northeast direction. It picks up moisture from the Indian Ocean and causes rainfall in India and adjoining countries.
4. Ice cover in the Tibetan plateau also affects monsoon rainfall.
5. During winter, Tibetan Plateau cools rapidly and produces a high-pressure cell i.e. an anticyclonic condition is established. The high-pressure cell over Tibet strengthens N-E monsoons
Tibetan plateau is an enormous block of high ground acting as a formidable barrier to the nearby winds. Monsoon refers to seasonal winds, which change their direction twice a year. The Indian monsoon is a complex system, which is influenced by many factors of which one is the Tibetan Plateau.