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Geography Optional 300+ Score Pack · Model answer

What are the causes of origin of local winds ? Discuss their significance on prevailing weather and climate in various regions, with suitable examples.

  • UPSC 2023
  • Climatology

Local winds are winds of limited extent produced by local pressure differences rather than by the planetary pressure belts; they form the tertiary circulation of the atmosphere, below the primary (trades, westerlies) and secondary (monsoons, cyclones) circulations.

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What the full answer covers

  • Causes of Origin of Local Winds
  • Differential Heating and Cooling
  • Gravity Drainage (Katabatic Winds)
  • Orographic Ascent and Descent (Foehn Effect)
  • Channelling Through Gaps
  • Travelling Pressure Systems
  • …and 8 more sections, with a conclusion

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