Question

Explain mechanism of monsoon

Answer 1

Phenomenon of monsoon refers to the seasonal reversal of winds. The offshore winds that blow from northeast direction are revearsed into onshore southwestern winds.This phenomena is based upon differential heating of land and ocean bodies. During summer in Indian subcontinent the large landmass gets heated up more rapidly than the neighbouring seas. As a result the air above land expands and rises up . The moisture laden winds arrive on the western coast of India from south western side of western ghats. The leeward side , however , recieves little rain . Futher rain occurs in northern plains and northeast parts of India with braching of monsoon . The monsoon is also aided by Inter tropical convergence zone or monsoontrough near the equator where winds from northern and southern hemisphere merge. The landmass of Indian subcontinent cools up around september with the sun retreating south . The ocean bodies which losw heat slowly retain the summer heat... The cooler high pressure air moves towards the low pressure over tge ocean and causes the retreating northeast monsoon .It mainly causes rainfall along the east coast of India.