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.

Summary:

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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