Wind in India are influenced by the strong south-west
summer monsoon, which starts in May-June, when cool, humid air moves
towards the land and the weaker north-east winter monsoon, which starts
in October, when cool, dry sir moves towards the ocean.
During the period march to August, the winds are uniformly strong over the whole Indian Peninsula, except the eastern peninsular coast.
Wind speeds during the period November to march are relatively weak,
though higher winds are available during a part of the period on the
Tamilnadu coastline.
A notable feature of the Indian programme has been the interest among
private investors/developers in setting up of commercial wind power
projects.
Wind Regime
The macro-scale atmospheric flow of wind
in tropical India is determined strongly by the strength of the monsoon
winds.The monsoon period in India can be categorized into two.
South-West monsoon.
North-East monsoon.
The South-West monsoon begins in the month of April and is formulated
in the Indian ocean which later gradually moves in the North-East
direction and first hits the state of Kerala by the second half of
May. Wind gradually gains strength over the months and peaks during
the month of July. During this period surface wind speeds exceeding
20-30 kmph are found over Western India, Southern Tamil Nadu, Saurashtra,
Kutch regions and coastal Bengal.
Strong upper winds (150m above ground) are observed in the forenoons
over the interior Peninsula, Western Madhya Pradesh, Rajasthan and
Saurashtra during the peak monsoon period.
The monsoon begins in the month of April and is formulated in the Indian ocean which later gradually moves in the North-East direction and first hits the state of Kerala by the second half of May. Wind later gains strength over the months and peaks during July.
From September the wind generally weakens over areas like Saurashtra, Kutch and Southern Tamil Nadu experiencing winds of over 15 kmph. This is the effect of large scale air-flow during South-West monsoon period. During the winter months, the large scale air-flow reverses i.e, moves from the Himalayan belts towards the Indian ocean which is called as the North-East monsoon. Wind speeds over 10 kmph are experienced during this period in Orissa, Saurashtra, Kutch and Southern Tamil Nadu.
