Consider the following statements regarding the Indian monsoon: Statement I: The reversal of upper-air jet streams during summer aids the onset of the southwest monsoon. Statement II: The formation of an intense low-pressure trough over the Tibetan Plateau draws moisture-laden winds from the Indian Ocean. Which of the following is correct?

💡 Solution & Explanation

The summer shift of the subtropical westerly jet stream north of the Himalayas and the establishment of the tropical easterly jet aloft play vital roles in sustaining monsoon circulation. Intense solar heating of the Tibetan Plateau generates a vast elevated heat low that reinforces surface pressure gradients across the subcontinent. These mechanisms combine to pull maritime winds across the equator into the Indian landmass. The seasonal arrival of these rains supports vast agricultural productivity across rural India.