How do jet streams affect the Indian climate?

By Ritesh|Updated : September 1st, 2022

The jetstream affects the Indian climate by increasing the nighttime temperature signals averagely, which is an impending approach to cyclones' disturbances. A slender band of westerly winds blowing at a high altitude (over 12,000 m) is known as a jetstream. They have the following effects on the Indian climate.

Effect of Jet Streams on the Indian Climate

  • During the winter, the western cyclonic disturbances, which originate over the Mediterranean Sea, are brought by the westerly jetstream and invade the Indian subcontinent from the west and northwest.
  • An increase in the average nighttime temperature generally signals an impending approach to these cyclone disturbances.
  • Over peninsular India, roughly over 14°N, an easterly jet stream known as the sub-tropical easterly jet stream blows during the summer.
  • Tropical cyclones, a product of the easterly flow, develop throughout the monsoon season and October and November.
  • The coastal areas of the nation are affected by these disturbances.
  • The northeast monsoon, or the winter monsoon, is related to the subtropical westerly Jet Stream.
  • A cold wind pushes downwind to the surface, thereby creating high pressure on the surface.
  • Then the dry winds from this high-pressure area in the northwestern part of India start blowing towards the low-pressure area or the Bay of Bengal.
  • These winds are also responsible for the cold waves flowing in winter in the northern part of the country, including UP and Bihar.


How do jet streams affect the Indian climate?

The jetstream affects the Indian climate by increasing the average nighttime temperature signals, an impending approach to cyclone disturbances.


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