Prelims · 3 Physical & World Geography · 3.4 Atmosphere, temperature, pressure and winds

3.4.9 Jet streams: subtropical and polar front jets and their effects

Jet streams are narrow, fast-flowing bands of wind near the tropopause, mostly westerly, which steer storms in the middle latitudes and play a key part in the onset and withdrawal of the Indian monsoon.

  • APPSC Group 2 · Prelims
  • Standard level
  • 7 min read
  • Full course

Key terms

  • jet stream
  • subtropical westerly jet
  • polar front jet
  • tropical easterly jet
  • Somali jet
  • Rossby waves
  • tropopause
  • western disturbances
  • monsoon onset
  • Tibetan Plateau
  • polar vortex
  • aviation

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Mains writingMains writing
  5. Common trapsFoundation
  6. Quick revisionFoundation

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