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General Studies 2022 GS Paper III 10 marks 150 words Compulsory Explain

GS Paper III — Q8

Explain the mechanism and occurrence of cloudburst in the context of the Indian subcontinent. Discuss two recent examples…

Explain the mechanism and occurrence of cloudburst in the context of the Indian subcontinent. Discuss two recent examples. (Answer in 150 words) 10 marks

हिंदी में प्रश्न पढ़ें

भारतीय उपमहाद्वीप के संदर्भ में बादल फटने की क्रियाविधि और घटना को समझाइए। हाल के दो उदाहरणों की चर्चा कीजिए। (150 शब्दों में उत्तर दीजिए)

Q8 of the 2022 UPSC Mains General Studies GS Paper III, as printed
The question as printed in the 2022 General Studies paper
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Model answer

Written by UPSC Answer Check against this question's marking rubric, to the 150-word length. UPSC does not publish answers for Mains — this is one way to score well, not an official key.

A cloudburst is an extreme, localized precipitation event exceeding 100 mm per hour over a limited geographical area (around 20–30 sq km).

Mechanism: It is triggered when steep mountain slopes force moisture-laden monsoon winds into rapid orographic lifting. This accelerates vertical convection, forming towering cumulonimbus clouds up to 14 km high. When the strong thermal updrafts can no longer support the massive accumulation of condensed moisture and supercooled droplets at freezing levels, a sudden downdraft collapses the cloud column, releasing an intense, concentrated deluge within minutes.

Occurrence in India: The phenomenon predominantly affects the Himalayas and Western Ghats due to sharp topographical gradients interacting with monsoon trough oscillations, compounded by microclimatic variations and urban heat island effects in foothill valleys.

Recent Examples:

  1. Amarnath Cloudburst (2022): A localized deluge near the cave shrine in Jammu and Kashmir triggered flash floods, claiming 16 lives.
  2. Dharamshala Cloudburst (2021): Intense precipitation caused catastrophic flash floods along the Bhagsu Nag nullah, causing extensive infrastructure damage.

With climate warming amplifying convective instability, expanding high-resolution X-band Doppler Weather Radar networks and localized nowcasting is critical to enhance early warning systems.

What "Explain" is asking you to do

Make the working of something clear — what sets it off, what follows from what, and what it produces. Explain is the Commission's mechanism word: it dominates the technical papers and the “explain why” stems, where the marks sit in the causal chain and not in the label.

Structure that answers it

State what it is → the initiating condition → the chain of cause, step by step → an instance where it plays out → what the chain produces

Where marks are lost

Describing what something looks like instead of why it works that way. Naming the stages without linking them reads as description too.

All UPSC directive words, compared →

How this answer will be evaluated

Approach

Framework: Environment: threat, causes, impact, mitigation. explain: definition/context > points in order > small example > short close Full marks: Clear mechanism, specific subcontinent context, two distinct recent examples with data.

Key points expected

  • Define cloudburst (intense rainfall in short duration)
  • Explain mechanism (orographic lift, monsoon, topography)
  • Contextualize for Indian subcontinent (Himalayas, Western Ghats)
  • Discuss two recent examples with location/year

Evaluation rubric

Each sub-part is marked on its own, against the marks and word limit printed on the paper.

  1. The answer Mechanism of cloudburst in Indian subcontinent and two recent examples.  · 150 words

    explain— definition/context → points in order → small example → short close

    Must cover

    • Define cloudburst (intense rainfall in short duration)
    • Explain mechanism (orographic lift, monsoon, topography)
    • Contextualize for Indian subcontinent (Himalayas, Western Ghats)
    • Discuss two recent examples with location/year

    Loses marks

    • Confusing cloudburst with general heavy rain
    • Vague examples without location or date
    • Ignoring the 'mechanism' aspect

    Earns more

    • Mention specific meteorological conditions (e.g., CAPE)
    • Link to climate change or urbanization
    • Mention specific regions (e.g., Uttarakhand, Kerala)

    Extra mark

    • Specific rainfall data (mm/hr) for examples
    • Reference to IMD or specific study

Practice this exact question

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