Question

give reason as to why

seasonal reversal of wind direction from the east to the west in Northern INdia subcontinent

Answer 1

• The climate of India is largely influenced by monsoon winds
• Early sailors noted the phenomena of this wind system prevalent in India
• They observed a reversal of wind system which benefitted them to sail different lands at their mercy
• They named this seasonal reversal of wind system as ‘monsoon’
• This mechanism can be attributed to various reasons
• The difference in heating and cooling of land and water creates low pressure on the landmass of India while the seas experience comparatively high pressure
• The shift of the position of Inter tropical convergence zone in summer over the Ganga plain and this trough is known as monsoon trough
• The movement of westerly jet stream to the north of Himalayas and the presence of tropical easterly jet stream over the Indian Peninsula during summer
• In certain years, there is a reversal in pressure conditions and the Eastern Pacific has lower pressure in comparison to the Eastern Indian Ocean