Question

explain the arrival and departure of the monsoon

Answer 1

To understand the mechanism of the monsoons, the following facts are important.

The differential heating and cooling of land and water creates low pressure on the landmass of India while the seas around experience comparatively high pressure.

The shift of the position of Inter Tropical Convergence Zone (ITCZ) in summer, over the Ganga plain (this is the equatorial trough normally positioned about 5°N of the equator – also known as the monsoon trough during the monsoon season).

The presence of the high-pressure area, east of Madagascar, approximately at 20°S over the Indian Ocean. The intensity and position of this high-pressure area affects the Indian Monsoon.

The Tibetan plateau gets intensely heated during summer, which results in strong vertical air currents and the formation of high pressure over the plateau at about 9 km above sea level.

The movement of the westerly jet stream to the north of the Himalayas and the presence of the tropical easterly jet stream over the Indian peninsula during summer.

Answer 2

Answer:

The monsoon arrives at the southern tip of the Indian peninsula usually by the first week of June. 5. The Arabian Sea branch reaches Mumbai approximately ten days after the on-set. ... The lofty mountains causes the monsoon winds to deflect towards the west over the Ganga plains.

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