The monsoon, which is essentially the seasonal reversal in wind direction, causes most of the rainfall received in India and some other parts of the world. The primary cause of monsoons is the difference between annual temperature trends over land and sea.
What are the factors that cause monsoon in India?
The Indian Monsoon
The monsoons usually happen due to the differential heating of land and water. You probably know that land heats faster than water. This change in heating leads to a difference in pressures, which in turn leads to currents. Thus, the changes in pressure conditions also affect the monsoons.
Where does monsoon come from in India?
The north-east monsoon, commonly known as winter monsoon blows from land to sea, whereas south-west monsoon, known as summer monsoon blows from sea to land after crossing the Indian Ocean, the Arabian Sea, and the Bay of Bengal. The south-west monsoon brings most of the rainfall during a year in the country.
What are 3 effects of a wet monsoon?
Yet the main health hazards during summer monsoon season are diseases like cholera, dengue, chikungunya, and malaria, as well as stomach and eye infections.
What weather is monsoon?
A monsoon is a seasonal change in the direction of the prevailing, or strongest, winds of a region. Monsoons cause wet and dry seasons throughout much of the tropics. Monsoons are most often associated with the Indian Ocean. Monsoons always blow from cold to warm regions.
Does it rain much in India?
The rainy season lasts from June to September; annual rainfall averages between 750–1,500 mm (30–59 in) across the region. Once the dry northeast monsoon begins in September, most significant precipitation in India falls on Tamil Nadu and Puducherry leaving other states comparatively dry.
What causes the monsoon?
The primary cause of monsoons is the difference between annual temperature trends over land and sea. … This low pressure regions sees continuous rise of moist wind from the sea surface to the upper layers of the atmosphere, where the cooling means the air can no longer hold so much moisture resulting in precipitation.
Why India is called tropical country Upsc?
Indian subcontinent is separated from the rest of Asia by the lofty Himalayan ranges which block the cold air masses moving southwards from Central Asia. … Thus the whole of India, south of the Himalayas can be climatically treated as a tropical country.
Is monsoon good or bad?
Monsoons are both helpful and harmful.
Although we often associate monsoons with harmful and destructive rain storms, the rains they bring are important for crop production. Summer monsoons in Asia are essential to bring enough water to the area to grow rice and other crops.
What are the positive and negative effects of monsoon?
Monsoons can have both negative and positive effects. Flooding caused by monsoon rains can destroy property and crops (SF Fig. … However, seasonal monsoon rains can also provide freshwater for drinking and crop irrigation.
What is monsoon effect?
A monsoon is a seasonal change in the direction of the prevailing, or strongest, winds of a region. Monsoons cause wet and dry seasons throughout much of the tropics. Monsoons are most often associated with the Indian Ocean. Monsoons always blow from cold to warm regions.