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Climate Change Impacts and Vulnerability

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

Understanding the specific, often irreversible, consequences of climate change and the differential vulnerability of regions and populations is crucial for policy formulation, disaster management, international cooperation, and addressing issues of climate justice.

Climate change impacts refer to the adverse effects of global warming on natural and human systems, including extreme weather events, sea-level rise, biodiversity loss, and disruptions to ecosystems and livelihoods. Vulnerability refers to the propensity or predisposition of human and natural systems to be adversely affected by climate change.

Phase IIStatic core

Facts & tables

Key facts

Irreversible Changes

Risks include Amazon dieback, permafrost thaw, ice-sheet collapse, and changes to ocean currents (e.g., AMOC).

Intensified Risks

Higher temperatures and longer duration above 1.5°C increase risks of extreme heat, wildfires, glacier loss, and coral reef damage.

Uneven Burden

Countries least responsible for emissions often face the most severe impacts, highlighting issues of climate justice.

Consequences of Overshoot

Even if temperatures are brought down, some damage (sea-level rise, extinctions) may continue or be irreversible.

Reference table

Static syllabus anchors

TypeReference
Conceptual areaEnvironmental Degradation
Conceptual areaDisaster Management

Reference table

Institutions & roles

BodyRole
United Nations Environment Programme (UNEP)Assesses impacts, highlights vulnerabilities
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Factual recall

Quick revision

  • Overshooting 1.5°C risks irreversible changes (e.g., Amazon dieback, ice-sheet collapse).
  • Impacts intensify with higher temperatures and longer duration of overshoot.
  • Vulnerable countries, least responsible for emissions, bear disproportionate burden.
  • Sea-level rise and extinctions may continue even if temperatures decline.
  • Need for adaptation finance for developing countries is critical.

High-confidence PYQs

2026Multi-statement analysis, Conceptual understanding

Consider the following statements with reference to India's response to climate change : I. India's Long-Term Low Emission Development Strategy (LT-LEDS) is...

Environment & EcologyOpen question
2025Multi-statement analysis, Factual recall

Consider the following statements: Statement I: Article 6 of the Paris Agreement on climate change is frequently discussed in global discussions on sustaina...

Environment & EcologyOpen question
2022Conceptual understanding, Terminology-based question

“Climate Action Tracker" which emission reduction pledges of different countries is a:

Environment & EcologyOpen question
2018Factual recall, Institutional roles and functions

"Momentum for Change: Climate Neutral Now" is an initiative launched by

Environment & EcologyOpen question
2017Statement-based questions, Factual recall

With reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct? 1. It is an initiative of the European Union. 2. It ...

Environment & EcologyOpen question

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants is a unique initiative of G20 group o...

Environment & EcologyOpen question
2017Multi-statement analysis, Factual recall

With reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct? 1. It is an initiative of the European Union. 2. It ...

Environment & EcologyOpen question

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants is a unique initiative of G20 group o...

Environment & EcologyOpen question
2016Statement-based questions, Factual recall

With reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct? 1. The Agreement was signed by all...

Environment & EcologyOpen question
2015Statement-based questions, Factual recall

Which of the following statements regarding ‘Green Climate Fund’ is/are correct? 1. It is intended to assist the developing countries in adaptation and miti...

Environment & EcologyOpen question

Topic timeline

Environmental DegradationDisaster Management
Prelims 2015· Statement-based questions, Factual recall

Which of the following statements regarding ‘Green Climate Fund’ is/are correct? 1. It is intended to assist the developing countries in adaptation and miti...

Open question
Prelims 2016· Statement-based questions, Factual recall

With reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct? 1. The Agreement was signed by all...

Open question
Prelims 2017· Statement-based questions, Factual recall

With reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct? 1. It is an initiative of the European Union. 2. It ...

Open question

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants is a unique initiative of G20 group o...

Open question
Prelims 2017· Multi-statement analysis, Factual recall

With reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct? 1. It is an initiative of the European Union. 2. It ...

Open question

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants is a unique initiative of G20 group o...

Open question
Prelims 2018· Factual recall, Institutional roles and functions

"Momentum for Change: Climate Neutral Now" is an initiative launched by

Open question
Prelims 2022· Conceptual understanding, Terminology-based question

“Climate Action Tracker" which emission reduction pledges of different countries is a:

Open question
Prelims 2025· Multi-statement analysis, Factual recall

Consider the following statements: Statement I: Article 6 of the Paris Agreement on climate change is frequently discussed in global discussions on sustaina...

Open question
Prelims 2026· Multi-statement analysis, Conceptual understanding

Consider the following statements with reference to India's response to climate change : I. India's Long-Term Low Emission Development Strategy (LT-LEDS) is...

Open question

UNEP says 1.5°C ‘overshoot’ is now unavoidable. Here’s what this means for climate action

04 Sep 2026 · The article emphasizes that exceeding the 1.5°C target, even temporarily, will lead to significant and potentially irreversible climate impacts like ice-sheet collapse and ecosystem damage. These impacts disproportionately affect vulnerable nations, underscoring the need for adaptation finance and climate justice.

Read article

Related topics

Current topic

Climate Change Impacts and Vulnerability

Often confused with

Hydro-meteorological Disasters

Open notes

Practice writing on this topic

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

See Mains PYQsEvaluate an answer

UPSC Prelims PYQs on Climate Change Impacts and Vulnerability

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

With reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct? 1. It is an initiative of the European Union. 2. It ...

2017·Environment & Ecology
Solve

With reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct? 1. The Agreement was signed by all...

2016·Environment & Ecology
Solve

Which of the following statements regarding ‘Green Climate Fund’ is/are correct? 1. It is intended to assist the developing countries in adaptation and miti...

2015·Environment & Ecology
Solve

“Climate Action Tracker" which emission reduction pledges of different countries is a:

2022·Environment & Ecology
Solve

Consider the following statements: Statement I: Article 6 of the Paris Agreement on climate change is frequently discussed in global discussions on sustaina...

2025·Environment & Ecology
Solve

Consider the following statements with reference to India's response to climate change : I. India's Long-Term Low Emission Development Strategy (LT-LEDS) is...

2026·Environment & Ecology
Solve

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants is a unique initiative of G20 group o...

2017·Environment & Ecology
Solve

"Momentum for Change: Climate Neutral Now" is an initiative launched by

2018·Environment & Ecology
Solve

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