Give a brief account of how monsoons advance into India.
Answer:
- In early June, the low pressure conditions over the northern plains intensify.
- These south-east trade winds cross the equator and blow in south-westerly direction, entering the Indian peninsula as the south-west monsoons.
- As these winds blow over warm oceans, they bring abundant moisture to the sub-continent.
- These winds are strong and blow at an average velocity of 30 km per hour.
- Early in the season, the windward side of the Western Ghats receives very heavy rainfall, more than 250 cm.
- The maximum rainfall of this season is received in the northeastern part of the country. Mawsynram in Khasi Hills receives the highest average rainfall in the world.
- Rainfall in the Ganges valley decreases from east to the west Rajasthan and parts of Gujarat get scanty rainfall.