Write about the mechanism of Indian monsoon
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Answer:
The mechanism affecting the monsoon is that the westerly jet causes high pressure over northern parts of the subcontinent during the winter. ... This jet creates a low-pressure zone over the northern Indian plains, influencing the wind flow toward these plains and assisting the development of the southwest monsoon.
During summer season as land gets heated up, the air rises and the low-pressure area is created on the land and on the other hand high-pressure area is created in the Indian Ocean. Air moves from high-pressure areas to low-pressure areas. The low-pressure land system attracts south-east trade winds but after crossing equator due to Coriolis force, winds turn right towards the low-pressure areas over the Indian subcontinent. These winds start blowing in a south-westerly direction and enter the Indian peninsula as the southwest monsoon. As it reaches India monsoons are divided into two branches namely - Arabian Sea branch and Bay of Bengal branch.