UPSC Notes

Permafrost Thawing

PYQs

4

Articles

1

Momentum

13

Phase IFoundation

Background

Overview

Permafrost thawing is a direct and severe consequence of global warming, impacting global carbon cycles, infrastructure resilience, biodiversity, and indigenous populations, making it a crucial topic for Environment, Geography, and Disaster Management.

Permafrost is ground (soil, rock, or sediment) that remains frozen for two or more consecutive years, primarily found in the Arctic and high-altitude regions. Its thawing, driven by rising global temperatures, is a critical consequence of climate change with far-reaching environmental and socio-economic impacts.

Phase IIStatic core

Facts & tables

Key facts

Infrastructure Impact

Leads to ground subsidence and instability, causing significant damage to infrastructure such as buildings, roads, pipelines, and airports in Arctic regions.

Climate Feedback

Contributes to a positive feedback loop in global warming, as released greenhouse gases further accelerate temperature increases.

Ecosystem & Livelihood Impact

Affects Arctic ecosystems, hydrology, and the livelihoods of indigenous communities.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaCryosphere
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Factual recall

Prelims angle: Conceptual understanding

Quick revision

  • Ground frozen >2 years in Arctic/high-altitudes.
  • Vast carbon reservoir; thawing releases GHGs (CH4, CO2).
  • Causes ground subsidence, damaging infrastructure.
  • Positive feedback loop for global warming.
  • Impacts Arctic ecosystems and indigenous livelihoods.

High-confidence PYQs

Topic timeline

Cryosphere

Related topics

Current topic

Permafrost Thawing

Practice writing on this topic

UPSC has asked 4 linked questions on Permafrost Thawing in Mains. Write an answer to one — and get it evaluated.

UPSC Prelims PYQs on Permafrost Thawing

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

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