MECHANISM OF MONSOONS
High temperatures in the months of May and June result in the formation of a low pressure zone along the Indo-Gangetic plains. The axis of this 'monsoon trough', oriented from the north-west to the south-east, shows periodic movements that play an important role in predictions of the monsoons.
The explanations given by Dr P. Koteshwaram' and Prof F. Flohn identify an area of rising air motion formed by the atmosphere over the Tibet plateau. Due to the rotation of the earth, the ascending air is deflected to the Indian west coast. as a return current from a southwesterly direction. The air gets laden with moisture as a result of the evaporation process when it moves across the Indian Ocean.
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