UPSC Notes

Climate Change Impacts on Extreme Weather

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

Climate change and its impacts are central to environmental studies, disaster management, and sustainable development, frequently tested in UPSC for understanding global and regional environmental challenges.

Climate change refers to long-term shifts in global temperatures and weather patterns, primarily driven by anthropogenic greenhouse gas emissions, leading to an observed increase in the frequency and intensity of extreme weather events such as floods, droughts, heatwaves, and tropical cyclones.

Phase IIStatic core

Facts & tables

Key facts

Hydrological Cycle Intensification

Warmer atmosphere holds more moisture, leading to more intense precipitation events and increased flood risk.

Glacier Melt

Accelerated melting of glaciers in mountainous regions contributes to glacial lake outburst floods (GLOFs) and increased river discharge.

IPCC Findings

Intergovernmental Panel on Climate Change (IPCC) reports consistently link anthropogenic climate change to observed increases in extreme weather events globally.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaEnvironment & Ecology

Reference table

Institutions & roles

BodyRole
Intergovernmental Panel on Climate Change (IPCC)Assesses scientific information related to climate change
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Factual recall

Quick revision

  • Increased frequency/intensity of extreme rainfall events.
  • Glacier retreat and GLOF risk in Himalayas.
  • Attribution science linking events to climate change.
  • Need for climate adaptation and resilience.
  • Role of global climate assessments (IPCC).

High-confidence PYQs

Topic timeline

Environment & Ecology

How the Nepal floods echo past disasters — and sound a warning for the future

28 Aug 2026 · Climate change intensifies the global hydrological cycle, leading to more frequent and severe extreme weather events like floods, particularly impacting vulnerable regions and necessitating urgent adaptation and mitigation strategies.

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Related topics

Current topic

Climate Change Impacts on Extreme Weather

Practice writing on this topic

UPSC has asked 8 linked questions on Climate Change Impacts on Extreme Weather in Mains. Write an answer to one — and get it evaluated.

UPSC Prelims PYQs on Climate Change Impacts on Extreme Weather

Practice official previous year questions asked by UPSC related to this concept.

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