Updated By: LatestGKGS Desk
Monsoon theory, weather conditions, period, cause of Monsoon rain in India
Monsoon's equatorial trapezoid wind theory
The origins of equatorial salivary winds are due to the inter-tropical convergence region (ITCZ) formed by the intermediate nucleus of the north-eastern commercial winds of the northern hemisphere and the southeastern commercial winds of the southern hemisphere. The direction of these winds is western and their flow area is called 'Doldrums'.
Flone Sir had done the interpretation of the equatorial trapezoid wind theory of monsoon origin. He believed that Equatorial Westerlies, attracted to low pressure created in north-western India due to excessive heat, enters India in the form of south-west monsoon winds in India.
Asian monsoon is the modified form of permanent winds flowing in the equatorial region. Due to the uplift of the Sun in summer, the thermal equinox line slips up to 300 A. Latitude, along with the Inter-tropical convergence zone (ITCZ) also slips north, Which is called the North Tropical Convergence Area (NITCZ).
In the summer season, the equatorial Pachua wind moves towards the Indian downturn, and these winds penetrate into India as the southwest monsoon winds and monsoon rain causes them. The inter-tropical convergence area (ITCZ) is called 'Monsoon Trough'.
In the winter the Indian low pressure turns into high pressure due to the uplift of the Sun and again in the north-east commercial winds flows in India.
