Why is the distribution of rainfall uneven in India? Mention any five factors.
Answers
(i) Relief:The Western ghats cause organic rainfall. The Arabian Sea branch of the South-west monsoon, which are moisture laden winds, causes even heavy rainfall when they strike the Western Ghats. Mawsynram, get more rain due to its relief. It gets rain from the Bay of Bengal branch of the South-west monsoon.
(ii) Distance from the Sea : Places near the coastal region get more rainfall than the places situated far away from the sea.
(iii) Direction of the Winds : Rajasthan get scanty rainfall due to Arabian sea branch blowing parallel to the Aravalli hills.
(iv) Inter-Tropical Convergence Zone (ITCZ) : It is also known as monsoon trough during the monsoon season. The trough and its axis keep on shifting, northward or southward, which determines the spatial distribution of rainfall. When the trough lies over the plains, rainfall is over this region. When the axis shift closer to the Himalayas, there is a dry spell over the plains and widespread rainfall in mountainous catchment area.
(v) The unnow of cyclonic disturbances : From the west and north-west. They orginate over the Mediterranean. Sea and Western Asia and move into India by the westerly flow. They cause winter rains over the plains and snowfall in the mountains.
The distribution of rainfall is uneven in India because of the following reasons:-
(i) Relief: The Western ghats produce natural rainfall. The Arabian Sea section of the South-west monsoon, which is moisture-laden breezes, creates even heavy rainfall when they resist the Western Ghats.
(ii) Distance from the Sea: Areas near the waterfront area get more moisture than the areas located distant from the sea.
(iii) The direction of the Winds: Rajasthan get the shortage of rainfall due to Arabian sea section sweeping correspondence to the Aravalli hills.
(iv) Inter-Tropical Convergence Zone (ITCZ): It is also known as a storm channel during the monsoon period. The channel and its axis keep on changing, north or south, which decides the spatial arrangement of rainfall.
(v) The unknown of cyclonic disturbances: These cyclonic disturbances originate from the west and north-west. Sea and Western Asian winds move into India by the westerly breeze. They generate wintertime rainfalls over the meadows and snowfall in the masses.