Climate Change and Pollution in India

Introduction

Climate change and pollution are interconnected environmental crises with far-reaching consequences for India's development trajectory. India, the world's third-largest emitter of greenhouse gases, faces a dual challenge -- accelerating economic growth while transitioning to a low-carbon pathway. Simultaneously, air, water, and soil pollution impose severe health and economic costs, with an estimated millions of premature deaths annually linked to pollution.

Climate Change Science

The Greenhouse Effect

The greenhouse effect is a natural process where certain atmospheric gases (water vapour, CO2, methane, nitrous oxide, ozone) trap infrared radiation re-emitted from the Earth's surface, keeping the planet approximately 33 degrees C warmer than it would otherwise be. Enhanced greenhouse effect refers to the intensification of this process due to human-driven increases in greenhouse gas concentrations since the Industrial Revolution.

Key Greenhouse Gases

IPCC Assessment Reports

The Intergovernmental Panel on Climate Change (IPCC), established in 1988 by WMO and UNEP, periodically publishes comprehensive assessment reports.

AR6 Synthesis Report (2023): Concluded that adverse climate impacts are already more far-reaching and extreme than anticipated. Limiting warming to 1.5 degrees C requires global emissions to peak before 2025 and be halved by 2030.

India's Climate Commitments

Paris Agreement (2015)

India ratified the Paris Agreement on 2 October 2016. The Agreement aims to limit global temperature rise to well below 2 degrees C, preferably 1.5 degrees C, above pre-industrial levels.

Common Mistake: The Paris Agreement (2015) is NOT legally binding in terms of emission reduction targets. Each country sets its own NDCs (Nationally Determined Contributions) voluntarily. Only the reporting and transparency mechanisms are mandatory. Contrast this with the Kyoto Protocol, which had legally binding targets for Annex I (developed) countries. UPSC tests this distinction repeatedly.

Panchamrit -- Five Climate Pledges (COP26, Glasgow, 2021)

Prime Minister Narendra Modi announced five climate targets at COP26 in November 2021:

Updated Nationally Determined Contributions (NDCs)

Lifestyle for Environment (LiFE)

Announced at COP26, LiFE promotes a mass movement for individual-level behavioural change to combat climate change, rooted in traditions of conservation and moderation.

National Action Plan on Climate Change (NAPCC)

Launched on 30 June 2008 by the Prime Minister's Council on Climate Change, the NAPCC outlines India's strategy through eight National Missions.

Pollution in India

Air Pollution

National Air Quality Index (NAQI / AQI)

Launched in 2014 by the Central Pollution Control Board (CPCB), the AQI uses a single number to communicate air quality to the public.

Pollutants Monitored: PM10, PM2.5, NO2, SO2, CO, O3, NH3, and Pb (8 pollutants).

Mnemonic: Remember the 8 AQI pollutants with "PM PM NO SO CO O AN PB" -- PM10, PM2.5, NO2, SO2, CO, O3 (ozone), NH3 (ammonia), Pb (lead). The AQI value is determined by the worst-performing pollutant on a given day (called the "predominant pollutant"). In Indian cities, PM2.5 is almost always the predominant pollutant in winter.

National Clean Air Programme (NCAP)

Launched in January 2019, NCAP targeted 40% reduction in PM10 concentrations by 2025–26 (base year 2017–18) in 131 non-attainment cities. Outcome (CREA/Energy & Clean Air Research, 2026): The 2025–26 deadline passed with the target largely unmet — as of 2025, only 39 of 229 cities with sufficient data met the PM10 NAAQS standard (60 µg/m³); 190 cities still exceeded it. PM2.5 performance is worse: 103 of 231 cities exceeded the PM2.5 NAAQS standard. Total NCAP grants disbursed: ₹13,036 crore (71% utilised); critics note 64% of spending went on road dust mitigation rather than the primary combustion sources driving PM2.5. MoEF&CC has released performance-linked grants totalling ₹9,209 crore to 130 cities (PRANA Portal data).

Key Air Pollution Legislation

Water Pollution

Water Quality Parameters (CPCB)

Soil Pollution

Major causes include excessive use of pesticides and fertilisers, industrial waste, improper solid waste disposal, mining activities, and e-waste dumping. The Soil Health Card Scheme (launched 2015) promotes balanced use of fertilisers based on soil testing.

Swachh Bharat Mission (SBM)

Waste Management Rules

Environmental Impact Assessment (EIA)

The EIA Notification, 2006 (under EPA 1986) lays down the procedure for obtaining Environmental Clearance (EC) for development projects.

EIA Process -- Four Stages

Project Categories

National Green Tribunal (NGT)

Remember: NGT was established under the NGT Act, 2010 -- NOT under EPA 1986. This is a common Prelims trap. Also note: NGT does not cover the Wildlife (Protection) Act, 1972 under its Schedule I jurisdiction. Wildlife-related cases must go to regular courts or the Supreme Court.

Important for UPSC

Prelims Focus

• Greenhouse gases and their GWP values (CO2 = 1, CH4 ~27.9, N2O 273 — all IPCC AR6, 100-year GWP)
• IPCC Assessment Reports timeline (AR1 through AR6; AR6 published 2021--2023)
• Panchamrit five pledges: 500 GW non-fossil, 50% renewable, 1 billion tonnes reduction, 45% intensity cut, Net Zero 2070
• India's updated NDC: 45% emissions intensity reduction by 2030 (submitted 2022); 47% by 2035 and 60% non-fossil capacity by 2035 (submitted to UNFCCC 24 April 2026); India achieved 50% non-fossil milestone in June 2025
• NAPCC launch year (2008) and all 8 missions by name
• AQI categories (6), pollutants monitored (8), launched in 2014
• NCAP (2019): 40% reduction in PM10 by 2025–26 in 131 non-attainment cities — target largely missed (only 39/229 cities met PM10 NAAQS by 2025; 190 cities still exceed it per CREA 2026 report)
• NGT establishment (2010), principal bench (New Delhi), disposal timeline (6 months)
• EIA Notification 2006: four stages (Screening, Scoping, Public Consultation, Appraisal)
• Ban on identified single-use plastics: 1 July 2022
• BS-VI emission norms: April 2020

Mains Dimensions

• GS3 (Environment): India's balancing act between development and climate commitments; effectiveness of NAPCC missions; EIA dilution debates; pollution-health nexus
• GS3 (Economy): Green finance; carbon markets; economic cost of air pollution (estimated at 1.4% of GDP); just energy transition for coal-dependent communities
• GS2 (Governance): Role of NGT in environmental governance; NGT vs High Courts -- jurisdictional overlaps; implementation gaps in waste management rules; Centre-State coordination on pollution control
• GS2 (International Relations): Climate justice -- Common But Differentiated Responsibilities (CBDR); India's position in UNFCCC negotiations; Loss and Damage Fund (COP27/COP28)
• GS1 (Geography): Impact of climate change on Indian monsoon patterns; Himalayan glacier retreat; sea-level rise threats to coastal cities
• Essay: "Climate change is the defining crisis of our time -- but it is also the greatest opportunity to reimagine progress."

Interview Angles

• Is India's Net Zero 2070 target ambitious enough compared to 2050 targets of developed nations?
• How can India simultaneously pursue industrialisation and decarbonisation?
• Should the EIA process be strengthened or streamlined for faster project approvals?
• What role should the judiciary (NGT, Supreme Court) play in environmental governance?
• Can individual lifestyle changes (LiFE mission) truly make a difference at scale?

Cross-paper relevance

• GS3 — Environment (primary) — Climate change-pollution nexus: urban heat islands, smog formation (NOx + VOC under heat), acid rain; industrial pollution and GHG co-emissions
• GS3 — Disaster management — Climate-intensified disasters: heat waves (NDMA heat action plans), cyclones, floods, wildfires — all exacerbated by climate-pollution interaction
• GS2 — Policy: NCAP (National Clean Air Programme); CPCB air quality monitoring; India's AQI framework; COP28/30 commitments on methane
• Essay — "Pollution and climate change are two faces of the same industrial coin" (recurring)

Recent Developments (2024–2026)

2024 — Warmest Year on Record, 1.5°C Annual Threshold Breached

The World Meteorological Organisation (WMO) confirmed that 2024 was the warmest year in recorded history, with the global average surface temperature approximately 1.54–1.55°C above the pre-industrial baseline — the first calendar year to breach the 1.5°C threshold that the Paris Agreement aims to keep warming "well below" (WMO/Copernicus, January 2025). 2025 was the second or third warmest year on record at 1.44°C above pre-industrial levels (WMO State of Global Climate 2025). The years 2023, 2024 and 2025 are the three warmest years in the 176-year instrumental record. The top 11 warmest years are all from 2014–2025.

The IPCC AR6 (Sixth Assessment Report, 2021–2023) confirms that human activities have warmed the climate by approximately 1.1°C since pre-industrial times, that every fraction of warming matters, and that limiting warming to 1.5°C requires reaching net zero CO₂ emissions globally by 2050. India's emissions grew by only 0.7% in 2024 — the slowest growth in decades, reflecting rapid clean energy deployment.

UPSC angle: 2024 as warmest year (1.54°C), 2025 second/third warmest (1.44°C), 1.5°C breach, IPCC AR6 findings, and India's emissions trajectory are Prelims and Mains anchor facts for climate change questions.

COP29 Baku 2024 — Climate Finance Outcome

The UN Climate Change Conference COP29 (11–22 November 2024, Baku, Azerbaijan) agreed to the New Collective Quantified Goal (NCQG) on climate finance: developed countries committed to mobilising at least $300 billion per year for developing countries by 2035, with a broader aspiration of mobilising $1.3 trillion annually from all sources by 2035. India — along with other G77 nations — strongly criticised the outcome as "abysmally poor," having advocated for at least $1.3 trillion per year from public sources alone. Some countries including India and Nigeria also accused the COP29 presidency of pushing the deal through without their proper consent, following chaotic last-minute negotiations.

COP29 also made partial progress on Article 6 of the Paris Agreement governing carbon markets, establishing a centralised UN carbon market mechanism (Article 6.4 mechanism). India is positioning itself as a major supplier of carbon credits through the emerging domestic Carbon Credit Trading Scheme (CCTS).

UPSC angle: COP29 NCQG ($300 billion developed-country commitment, $1.3 trillion broader goal), India's criticism, Article 6.4 mechanism, and the climate finance gap are Mains GS-2/GS-3 content.

India's NDC 2031–2035 — What "Ahead of Schedule" Actually Means for Ambition

(India's Updated NDC 2031–2035 targets — 47% emissions intensity by 2035, 60% non-fossil capacity by 2035, 3.5–4 billion tonnes CO₂ carbon sink, net-zero 2070 — are covered in India's Climate Commitments table above. This section analyses what the "ahead of schedule" achievement implies for UPSC equity questions.)

India achieved the 50% non-fossil electricity capacity milestone in June 2025 — five years ahead of the 2030 NDC deadline. By February 2026, non-fossil share had risen further to 52.57% (PIB). CO₂ emissions grew by only 0.7% in 2024 — one of the slowest growth rates in decades — and coal power generation fell in 2025 (down 3.0%; Carbon Brief), as renewable energy increasingly displaced coal.

The "ahead of schedule" argument in climate negotiations: India's ability to show pre-schedule achievement is strategically significant. In climate negotiations, this evidence is used to argue: (a) India is demonstrating ambition beyond its fair share; (b) developing countries cannot do more without adequate climate finance from historically responsible developed nations; (c) the current $300 billion NCQG commitment (COP29) is inadequate given the scale of the transition required.

The equity paradox for Mains: India's per capita emissions are ~2.19 tonnes CO₂/year in 2024 (IEA/Worldometer) — the second lowest among the 20 largest economies (global average: ~4.7; USA: ~14.9; EU: ~6). India contributes ~7% of global annual emissions (~3.2 Gt CO₂; 2024) while serving ~18% of global population. Notably, India registered the largest absolute increase in GHG among all nations in 2024 (+165 MtCO₂e) — a fact developed countries cite — but this must be seen in per-capita context. The key Mains argument is not whether India's absolute targets are ambitious but whether the global climate finance architecture equitably compensates developing nations for the costs of a transition they did not cause.

UPSC angle: June 2025 non-fossil milestone, 52.57% by February 2026, 0.7% 2024 emissions growth, per-capita equity argument (~2.19 tCO₂ vs 4.7 global average), and the climate finance-ambition linkage are Mains GS-3 analytical depth points for India's climate commitment questions.

Vocabulary

Adaptation

• Pronunciation: /ˌædæpˈteɪʃən/
• Definition: The process of adjustment to actual or expected climate change and its effects, in order to moderate harm or exploit beneficial opportunities.
• Root: Latin ad- = to + aptus = fit → aptāre = to fit → adaptāre = to adjust; French adaptation
• Origin: From French adaptation, from Medieval Latin adaptātiō, from Latin adaptāre ("to fit, adjust"), from ad- ("to") + aptāre ("to fit"), from aptus ("fit, suitable").
• Part of Speech: noun
• Word Family: adapt (v), adaptive (adj), adaptable (adj), adapter (n), maladaptation (n), adapted (adj)
• Usage: As climate shocks intensify, India's policy emphasis must shift from reactive disaster relief towards proactive adaptation — climate-resilient cropping, drought-tolerant seeds and decentralised water harvesting that equip vulnerable communities to withstand a changing environment.
• Synonyms: adjustment, modification, accommodation, acclimatisation, conversion, reworking
• Antonyms: rigidity, stagnation, maladaptation, inflexibility
• Mnemonic: Think "ADAPT" → from Latin aptus, 'apt/fit': adaptation is making something APT for new conditions.

Sequestration

• Pronunciation: /ˌsiːkwɛˈstreɪʃən/
• Definition: The process of capturing and storing atmospheric carbon dioxide, either through natural means such as forests and soils or through technological methods such as carbon capture and underground storage.
• Root: Latin sequestrātiō = a depositing; sequestrāre = to commit for safekeeping; sequester = trustee, mediator; -ation = process suffix
• Origin: From Latin sequestrātiō ("a depositing"), from sequestrāre ("to commit for safekeeping"), from sequester ("trustee, mediator").

• Part of Speech: noun
• Word Family: sequester (v/n), sequestrate (v), sequestrated (adj), sequestered (adj)
• Usage: The carbon sequestration potential of India's mangroves and degraded forests, if monetised through credible afforestation programmes, could simultaneously advance the nation's net-zero-by-2070 pledge and provide green livelihoods to coastal and tribal communities.
• Synonyms: isolation, seclusion, segregation, confiscation, seizure, separation
• Antonyms: release, restoration, integration, circulation
• Mnemonic: Think "sequester" = to set apart, hidden inside is "que(st)" — picture a jury sent off on a lonely quest, sequestered from the world; in green terms, carbon is locked away on a one-way quest into a forest sink.

Key Terms

Paris Agreement

• Pronunciation: /ˈpærɪs əˈɡriːmənt/
• Definition: A legally binding international treaty on climate change adopted by 196 parties at COP21 in Paris on 12 December 2015, aiming to limit global temperature rise to well below 2 degrees C above pre-industrial levels with efforts to limit it to 1.5 degrees C, through a bottom-up system of voluntary Nationally Determined Contributions (NDCs) that each country sets and updates every five years with increasing ambition (the "ratchet mechanism"). The agreement entered into force on 4 November 2016 after crossing the dual threshold of 55 parties representing 55% of global emissions.
• Context: Named after Paris, France, where COP21 was held. India ratified the agreement on 2 October 2016. Unlike the Kyoto Protocol (top-down, legally binding targets for Annex I countries only), the Paris Agreement uses a bottom-up "pledge and review" approach where all countries — developed and developing — submit NDCs. What IS legally binding is the process: countries MUST submit NDCs, participate in the Global Stocktake (every 5 years), and update targets. The first Global Stocktake (COP28, 2023) found the world is not on track for 1.5 degrees C and projected 2.4-2.6 degrees C warming under current policies. It produced the first-ever COP text calling for "transitioning away from fossil fuels" — historic language after 30 years of negotiations.
• UPSC Relevance: GS3 Environment and Climate Change. Prelims tests the 1.5/2 degrees C targets, adoption year (2015), entry into force (2016), India's ratification (2 October 2016), and the distinction that NDC targets are voluntary while the process (submission, review, update) is binding. Mains 2025 asked to review India's climate commitments and how they were strengthened at COP26 (Panchamrit pledges). Focus on: Paris vs Kyoto comparison (voluntary vs binding targets, universal vs Annex I only, bottom-up vs top-down), India's CBDR principle position, India's updated NDC (45% emissions intensity reduction by 2030), and the first Global Stocktake outcomes at COP28.

Nationally Determined Contributions

• Pronunciation: /ˈnæʃənəli dɪˈtɜːrmɪnd ˌkɒntrɪˈbjuːʃənz/
• Definition: National climate action plans submitted by each country under Article 4 of the Paris Agreement, outlining how it intends to reduce greenhouse gas emissions, adapt to climate impacts, and contribute to the global temperature goal. NDCs must be updated every five years with increasing ambition (the ratchet mechanism). India has submitted three iterations: the first NDC (2016: 33–35% emissions intensity reduction by 2030 from 2005 levels, 40% non-fossil power capacity), the updated NDC (August 2022: 45% emissions intensity reduction, 50% cumulative electric power from non-fossil sources, 500 GW non-fossil capacity by 2030), and the 2035 enhanced NDC (Cabinet approval 25 March 2026; UNFCCC submission 24 April 2026: 47% emissions intensity reduction and 60% non-fossil capacity by 2035, 3.5–4 Bt carbon sink).
• Context: NDCs evolved from the earlier concept of Intended Nationally Determined Contributions (INDCs) submitted before the Paris conference and converted to NDCs upon ratification. India's updated NDC (2022) formalised the Panchamrit pledges made by PM Modi at COP26 (Glasgow, November 2021): 500 GW non-fossil energy capacity by 2030, 50% energy from renewables by 2030, reduce total projected carbon emissions by 1 billion tonnes by 2030, reduce emissions intensity of GDP by 45% by 2030, and achieve net-zero emissions by 2070. India achieved a major milestone in June 2025 — reaching 50% of installed electricity capacity from non-fossil sources, more than five years ahead of the NDC target.
• UPSC Relevance: GS3 Environment. Prelims tests India's updated NDC targets (500 GW non-fossil capacity, 50% non-fossil power, 45% emissions intensity reduction by 2030, net-zero by 2070) and the distinction between INDCs and NDCs. Mains expects critical analysis of: whether India's NDCs are ambitious enough given the 1.5 degrees C carbon budget constraint, how the Panchamrit pledges at COP26 were formalised, the gap between NDC targets and implementation, and India's argument under CBDR that developed countries must provide climate finance before demanding greater ambition from developing nations. NDCs are the operational backbone of the Paris Agreement architecture.

Current Affairs Connect

Sources: Ministry of Environment, Forest and Climate Change (moef.gov.in); Press Information Bureau (pib.gov.in); Central Pollution Control Board (cpcb.nic.in); IPCC (ipcc.ch); UNFCCC (unfccc.int); National Green Tribunal (greentribunal.gov.in); India Code (indiacode.nic.in); PRS Legislative Research (prsindia.org).