GS1 2024 Q6 10 marks 150 words Geophysical Phenomena

UPSC Mains 2024 GS1 Q6 — Geophysical Phenomena

What is the phenomenon of ‘Cloudbursts’? Explain. (Answer in 150 words) 10

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Question Decoded — examiner's intent

Directive verbs
Explain
Scope keywords
phenomenonCloudbursts
Implicit sub-parts
  • Standard IMD definition (precipitation rate threshold)
  • Meteorological conditions and mechanism (convective clouds, orographic lift)
  • Geographical hotspots and why they occur there (Himalayan terrain vs plains)
  • Linkage with climate change/global warming as an intensifying factor
Common pitfalls
  • Confusing cloudbursts with general heavy rainfall or urban flooding without citing the 100mm/hour threshold
  • Failing to mention the role of 'Orographic Lift' which is central to the physical phenomenon
  • Focusing too much on disaster management/mitigation instead of the physical 'phenomenon' requested
  • Neglecting to mention the localized nature (approx. 20-30 sq km) of the event
Dimensions required
Meteorological/Atmospheric ScienceGeographical/TopographicalClimatological (Climate Change context)
Marks allocation hint

Spend 30 words on a precise IMD definition and criteria. Allocate 60 words to the 'how'—the process of cumulonimbus formation and moisture trapping. Use the remaining 60 words to explain the 'where' (mountainous terrain) and the impact of rising temperatures on frequency.

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