Answer: It is the Arabic word ‘Mausim’ from which the word monsoon has been derived. The meaning of the Arabic word ‘mausim’ is a season. The monsoon is described as the seasonal wind movement which brings rain and precipitation. Additionally, a seasonal shift in the direction of the wind is also called a monsoon. Heavy rainfall is caused by the Indian monsoon which is one of the most prominent monsoons all over the world.
The reason why India has a monsoon type of climate is that the country’s climate is influenced by the monsoon winds or the changing weather conditions. It is the differential heating of land and water bodies and pressure situations because of which it happens. The monsoon in India starts in July and ends in September. 80 to 90 percent of rainfall in the country is because of the monsoon. The summer monsoon causes heavy rain in different parts of the country when the monsoon wind blows from sea to land. On the other hand, the winter monsoon does not cause much rain in the country because monsoon winds blow from the interior of the continents to the sea.
The monsoon in India occupies two divisions out of a total of four seasonal divisions and these are:
- The southwest monsoon season: The rainfall received from the southwest monsoon occurs between the months of June and September and is seasonal.
- The retreating monsoon season: The rainfall received from the retreating monsoon occurs between the months of October and November.
Many factors influence the South-West monsoon formation in India and these are:
- The shift in the position of the Inter-Tropical Convergence Zone (ITCZ)
- The hated Tibetan plateau.
- The presence of the high-pressure area.
- Tropical easterly Jet
- The movement of the westerly jet stream