What are Jet Streams? How do they affect the climate of India during summer and winter season?
Answers
Jet streams are a narrow belt of high altitude which is above 12000 m westerly winds in the troposphere.Their speed varies from 110 km/h in summer to about 184 km/h in Winter.
The streams which flow from West are responsible for the Disturbances experienced by the North and North Western States.
The streams flowing from east are responsible for disturbances during monsoons as well as months of October and November.
Hope it helps you
Jet streams are a narrow belt of high altitude (above 12,000 m) westerly winds in the troposphere. Their speed varies from about 110 km/h in summer to about 184 km/h in winter. A number of separate jet streams have been identified. The most constant are the mid-latitude and the sub tropical jet stream.
Over India, these jet streams blow south of the Himalayas, all through the year except in summer. The western cyclonic disturbances experienced in the north and northwestern parts of the country are brought in by this westerly flow. In summer, the subtropical westerly jet stream moves north of the Himalayas with the apparent movement of the sun. An easterly jet stream, called the tropical easterly jet stream blows over peninsular India, approximately over 14°N during the summer months.