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Subject: Climate Change

1. Global Warming and Issues
2. All about Pollution

  • Cauvery Basin May Face Water Decline Till 2050 

    Why in the News

    A study by IIT Gandhinagar published in Earth’s Future journal warns that the Cauvery river basin may face a decline in water availability until 2050, unlike most other Indian rivers expected to see increased flows due to climate change.

    Key Findings of the Study

    Decline in Cauvery Water

    • 3.5 percent decline in Cauvery water expected
    • Time period: 2026 to 2050
    • Minimal increase expected after 2051

    Historical Decline

    • Cauvery streamflow declined 28 percent between 1951 and 2012
    • Based on data from Kollegal monitoring station

    Contrast with Other Rivers

    • Most major Indian rivers expected to see increase in flow
    • Projected increases
      • Indus: 25 percent increase
      • Ganga: 8 percent increase
      • Krishna: 16 percent increase
    • Cauvery stands as exception
    [2020] Which of the following Protected Areas are located in Cauvery basin? 
    1 Nagarhole National Park 
    2 Papikonda National Park 
    3 Sathyamangalam Tiger Reserve 
    4 Wayanad Wildlife Sanctuary 
    Select the correct answer using the code given below: 
    (a) 1 and 2 only (b) 3 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4

  • India Targets 60 Percent Non Fossil Power Capacity by 2035

    Why in News

    India updated its Nationally Determined Contributions NDC under the Paris Agreement, setting new climate targets for 2035.

    Key Climate Targets for 2035

    Energy Transition Target

    • 60 percent installed electricity capacity from non fossil sources
    • Non fossil sources include: Solar, Wind, Hydropower, Biomass, and Nuclear

    Emissions Reduction Target

    • Reduce emissions intensity of GDP by 47 percent
    • Base year: 2005 levels

    Carbon Sink Target

    • Increase carbon sink to 3.5 to 4 billion tonnes of CO2 equivalent
    • Through: Forest cover and Tree cover

    Current Status

    Non Fossil Capacity

    • Current installed capacity from non fossil sources: 52 percent
    • Power generation from non fossil sources: About 25 percent

    Emissions Reduction

    • India reduced emissions intensity: 36 percent reduction from 2005 to 2020

    Carbon Sink Progress

    • Carbon sink created from 2005 to 2019: 1.97 billion tonnes CO2 equivalent

    Forest Cover

    • Forest and tree cover in 2021: 24.6 percent of geographical area
    • National target: 33 percent forest cover

    Earlier NDC Targets for 2030

    India committed to:

    • 50 percent non fossil electricity capacity
    • 44 percent emissions intensity reduction
    • Carbon sink of 2.5 to 3 billion tonnes

    Paris Agreement Context

    • Countries must submit updated NDC every five years
    • India required to submit updated targets by 2025
    • Targets apply for 2031 to 2035 period
    [2016] The term ‘Intended Nationally Determined Contributions’ is sometimes seen in the news in the context of 
    (a) pledges made by the European countries to rehabilitate refugees from the war-affected Middle East  
    (b) plan of action outlined by the countries of the world to combat climate change 
    (c) capital contributed by the member countries in the establishment of Asian Infrastructure Investment Bank 
    (d) plan of action outlined by the countries of the world regarding Sustainable Development Goals

  • Smog-Eating Photocatalytic Coating

    Why in the News

    • The Delhi Government and IIT Madras are collaborating to study smog eating photocatalytic coatings on roads to reduce urban air pollution.

    What is Smog-Eating Photocatalytic Coating

    • A special coating applied on roads and buildings
    • Designed to neutralize harmful pollutants in the air
    • Targets:
      • Nitrogen dioxide (NO₂)
      • Volatile hydrocarbons
      • Other toxic gases

    Compound Used

    Titanium Dioxide (TiO₂)

    • Most commonly used material
    • Advantages:
      • Low cost
      • Chemically stable
      • Durable
      • Compatible with construction materials

    Working Mechanism

    Photocatalysis Process

    • Sunlight activates Titanium dioxide
    • Chemical reactions break down pollutants
    • Converts harmful gases into:
      • Less toxic substances
      • Harmless compounds

    Result:

    • Cleaner air
    • Reduced smog levels
    • Environmental cleaning

    Applications

    • Roads, Buildings, Pavements, Flyovers, and Public infrastructure

    Benefits

    • Reduces urban air pollution
    • Passive pollution control
    • Low maintenance
    • Cost effective
    • Sustainable technology
    [2013] Photochemical smog is a resultant of the reaction among: (a) NO 2 ​ , O 3 ​ and peroxyacetyl nitrate (PAN) in the presence of sunlight (b) CO 2 ​ , O 2 ​ , and peroxyacetyl nitrate in the presence of sunlight (c) CO, CO 2 ​ , and NO 2 ​ at low temperature (d) high concentration of NO 2 ​ , O 3 ​ and CO in the evening

  • Erratic Weather in March 2026 

    Why in the News

    • March witnessed unusual weather patterns: early heatwaves followed by thunderstorms, hailstorms, and rain across India.
    • Special Phenomena: Nor’westers (Kalbaisakhi) in eastern India: Sudden intense storms with thunder, lightning, and hail

    What Happened

    • Early March: Heatwaves in North and West India
    • Mid to late March: Sudden shift to:
      • Thunderstorms
      • Hailstorms
      • Intense rainfall
    • Impact: Significant temperature drop

    Main Reasons

    1. Western Disturbances (WDs)

    • Origin: Mediterranean region (via West Asia)
    • Role: Bring rain and snowfall in non-monsoon months
    • Key factor: Two intense Western Disturbances (March 13 & 18) triggered widespread weather changes

    2. Cyclonic Circulation

    • Persistent low-pressure circulation in lower atmosphere
    • Helped intensify: Cloud formation and Rainfall activity

    3. Moisture Influx

    • Winds from: Bay of Bengal and Arabian Sea
    • Result: High moisture availability

    4. Wind Convergence

    • Interaction of: Warm moist winds and cold winds
    • Outcome: Severe convection leading to thunderstorms and hail

    5. Seasonal Transition

    • March marks winter to summer transition
    • Rising temperatures plus moisture create ideal conditions for: Thunderstorms and Hailstorms. 

    Geographical Spread

    • Affected regions:
      • Western Himalayas
      • Northeast India
      • Central and Northwest India
      • Parts of South India
    [2015] Consider the following statements: 
    1. The winds which blow between 30° N and 60° S latitudes throughout the year are known as westerlies. 
    2. The moist air masses that cause winter rains in North-Western region of India are part of westerlies. 
    Which of the statements given above is/are correct? 
    (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

  • Rising CO₂ Threatens Mangrove Fish Nurseries 

    Why in the News

    • A study in AGU Advances highlights declining oxygen levels in mangrove waters due to rising CO₂.

    Key Concept: Hypercapnic Hypoxia

    • Condition of: High CO₂ + Low dissolved oxygen
    • Occurs in: Mangrove estuaries (especially low tide, tropical regions)

    Major Findings

    • By 2100:
      • Oxygen ↓ 5–35%
      • CO₂ ↑ 8–60%
    • Events will:
      • Become 15× more frequent
      • Last longer (12–24 hours at 78% sites)

    Impact on Ecosystem

    1. Fish Nurseries at Risk

    • Reduced safe time for fish entry
    • Decline in juvenile fish survival

    2. Biodiversity Loss

    • Shift away from: Large reef-associated fish
    • Affects commercially important species

    3. Fisheries Impact

    • Mangroves: Support ~20,000 extra fish/ha/year
    • ~4 million fishers depend globally
    [2012] The acidification of oceans is increasing. Why is this phenomenon a cause of concern? The growth and survival of calcareous phytoplankton will be adversely affected. The growth and survival of coral reefs will be adversely affected. The survival of some animals that have phytoplanktonic larvae will be adversely affected. The cloud seeding and formation of clouds will be adversely affected. Select the correct answer using the code given below: (a) 1, 2 and 3 only (b) 2 only (c) 1 and 3 only (d) 1, 2, 3 and 4

  • [18th March 2026] The Hindu OpED: A bit of blur over India’s new carbon credit plan

    PYQ Relevance[UPSC 2025] What is Carbon Capture, Utilization and Storage (CCUS)? What is the potential role of CCUS in tackling climate change?Linkage: The PYQ covers climate change mitigation and environmental technology (GS 3), especially emission reduction strategies like CCUS. The article applies this through India’s CCUS-focused carbon credit policy, highlighting tension with agriculture-based carbon markets.

    Mentor’s Comment

    India’s Carbon Capture, Utilization, and Storage (CCUS) initiative aims to reduce greenhouse gas emissions to meet 2070 net-zero targets, focusing on high-emitting industrial sectors. The Union Budget 2026-27 announced a ₹20,000 crore scheme to scale up CCUS deployment, specifically targeting power, steel, cement, refineries, and chemical industries. The Budget 2026 announcement highlights the tension between industrial decarbonisation via CCUS and nature-based carbon markets involving agriculture. This raises issues of policy clarity, sectoral prioritisation, and climate governance design.

    What is the core objective of India’s carbon credit plan?

    1. Industrial Decarbonisation Focus: Targets sectors like power, steel, cement, refineries, and chemicals where emissions are concentrated and difficult to eliminate.
    2. CCUS Deployment: Ensures capture of CO₂ from industrial flue gases and its utilization or storage underground.
    3. Technology-led Transition: Supports R&D roadmap released by Department of Science and Technology (Dec 2025).
    4. Budgetary Commitment: ₹20,000 crore over five years for large-scale CCUS deployment.

    Why is agriculture excluded from CCUS strategy?

    1. Emission Characteristics: Agricultural emissions (methane, nitrous oxide) are diffuse and biologically mediated.
    2. Technological Limitation: CCUS is suited for point-source emissions, not dispersed sources like farms.
    3. Policy Segregation: Clear distinction between CCUS (industrial) and Carbon Dioxide Removal (CDR) via soil, biochar, agroforestry.
    4. Role of Agriculture: Positioned under carbon sequestration pathways, not industrial capture.

    What is causing confusion around ‘farmer carbon credits’?

    1. Terminology Overlap: Use of “carbon credit programme” creates perception of inclusivity across sectors.
    2. Parallel Narratives: Media and discourse suggest farmers can directly earn credits under Budget allocation.
    3. Existing Voluntary Markets: Agriculture and forestry projects already generate credits for domestic and global buyers.
    4. Policy Communication Gap: Lack of clear distinction between regulated compliance markets and voluntary carbon markets.

    What are the implications of prioritising CCUS over agriculture?

    1. Industrial Competitiveness: Supports decarbonisation of sectors contributing ~25% of India’s emissions.
    2. Net-Zero Alignment: Essential for achieving India’s climate commitments.
    3. Missed Rural Opportunity: Delays monetisation of agriculture’s carbon sequestration potential.
    4. Fiscal Prioritisation: Directs public funds toward capital-intensive technologies instead of nature-based solutions.

    Can agriculture-based carbon markets emerge as a parallel opportunity?

    1. Soil Carbon Sequestration: Enhances carbon storage through regenerative practices.
    2. Agroforestry Potential: Integrates trees into farming systems to generate carbon credits.
    3. Private Sector Initiatives: Pilot programmes compensate farmers for sustainable practices.
    4. Policy Requirement: Needs separate funding, institutional frameworks, and certification mechanisms.

    What policy approach is required to resolve the ambiguity?

    1. Clear Sectoral Demarcation: Separates ‘smokestack’ (industrial) and ‘soil’ (agriculture) carbon pathways.
    2. Dedicated Agricultural Policy: Establishes structured carbon farming programme with incentives.
    3. Market Development: Creates trusted domestic carbon market for agriculture credits.
    4. Communication Clarity: Ensures alignment between policy design and public narrative.

    Conclusion

    India’s carbon credit framework reflects a dual transition challenge: industrial decarbonisation through CCUS and agricultural transformation through carbon sequestration. Policy clarity, sector-specific instruments, and institutional coherence are essential to avoid misaligned expectations and unlock full climate and economic potential.

  • India Submits First National Report on Nagoya Protocol (ABS)

    Why in the News?

    India has submitted its First National Report (NR1) on the implementation of the Nagoya Protocol (ABS) to the Convention on Biological Diversity (CBD) on 27 February 2026, fulfilling obligations under Article 29.

    Key Highlights of the Report

    1. Reporting Period

    • Covers 1 November 2017 to 31 December 2025
    • Earlier Interim Report submitted in 2017

    2. Legal & Institutional Framework

    • Based on: Biological Diversity Act, 2002, Biological Diversity Rules, 2024 and ABS Regulations, 2025. 
    • Three-tier structure:
      • National Biodiversity Authority (NBA)
      • State Biodiversity Boards (SBBs) / UT Biodiversity Councils
      • Biodiversity Management Committees (BMCs)
    • 2,76,653 BMCs established → strong grassroots participation

    3. Access and Benefit Sharing (ABS) Performance

    • Total approvals (2017–2025): 12,830
      • NBA: 5,913 approvals (research, IPR, commercial use, etc.)
      • SBBs/UTBCs: 6,917 approvals (commercial utilization)

    4. Global Leadership in Compliance

    • 3,556 IRCCs (Internationally Recognised Certificates of Compliance) published
    • Accounts for over 60% of global total
    • Shows leadership in transparency under Nagoya Protocol

    5. Financial Benefits Generated

    • ₹216.31 crore mobilised through NBA approvals
      • ₹139.69 crore disbursed to: Local communities, Farmers, and Traditional knowledge holders
    • ₹51.96 crore generated via SBBs/UTBCs

    6. Non-Monetary Benefits

    • 395 approvals included: Capacity building, Technology transfer, Training and Collaborative research. 

    7. Monitoring of Foreign Biological Resources

    • 41 declarations received for use of foreign bioresources
    • Ensures compliance with international ABS norms

    8. Capacity Building & Awareness

    • 2,56,393 individuals trained
    • Through: 3,724 workshops and 600+ capacity-building initiatives

    9. Strategic Contribution

    • Supports Target 13 of India’s NBSAP (National Biodiversity Strategy and Action Plan)
    • Strengthens: Biodiversity conservation, Livelihood security, and Community participation
    [2025] Consider the following statements: 
    1. In India, the Biodiversity Management Committees are key to the realisation of the objectives of the Nagoya Protocol. 
    2. The Biodiversity Management Committees have important functions in determining access and benefit sharing, including the power to levy collection fees on the access of biological resources within its jurisdiction. 
    Which of the statements given above is/are correct? 
    (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

  • ‘Super El Niño’ Alert: Risk of Record Global Heat

    Why in the News

    Forecasters, including NOAA Climate Prediction Center, warn of a possible El Niño in 2026, with chances it could intensify into a “super El Niño”, potentially pushing global temperatures to new highs.

    What is El Niño?

    • A warm phase of the El Niño–Southern Oscillation (ENSO)
    • Occurs when Pacific Ocean surface waters become warmer than normal

    What is a “Super El Niño”?

    • When sea surface temperature rises ≥ 2°C above average
    • Much stronger than normal El Niño
    • Rare events: Last major one: 2015–16

    Current Situation

    • Present phase: La Niña (cool phase) is ending
    • Forecast: ~62% chance of El Niño by mid-2026 and ~15% chance of super El Niño

    How El Niño Works

    • Warm water shifts toward eastern Pacific
    • Weakens trade winds
    • Alters global weather systems
    [2011] La Niña is suspected to have caused recent floods in Australia. How is La Niña different from El Niño? 
    1. La Niña is characterized by unusually cold ocean temperature in the equatorial Indian Ocean whereas El Niño is characterized by unusually warm ocean temperature in the equatorial Pacific Ocean. 
    2. El Niño has an adverse effect on the southwest monsoon of India, but La Niña has no effect on monsoon climate. 
    Select the correct answer: 
    (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

  • [16th March 2026] The Hindu OpED: Building India’s climate resilience with water at the core

    PYQ Relevance[UPSC 2017] Climate Change is a global problem. How India will be affected by climate change? How Himalayan and coastal states of India will be affected by climate change?Linkage: Climate change in India largely manifests through water stress, floods, glacial melt, and sea-level rise. The article links these impacts to Himalayan river instability and coastal aquifer salinisation, highlighting regional climate vulnerability.

    Why in the News?

    The COP30 Climate Summit in Belém (Brazil, 2025) introduced the first global adaptation indicators integrating Water, Sanitation and Hygiene (WASH) systems into climate accountability frameworks. Now there is a major shift in global climate governance: water systems are emerging as the central pillar of climate resilience. The outcomes of the UN Climate Conference COP30 and the Belém Adaptation Indicators place water management, sanitation, and hydrological governance at the core of adaptation strategies.

    How does climate change manifest primarily through water systems in India?

    1. Hydrological Disruptions: Climate change alters rainfall patterns, leading to extreme floods and prolonged droughts affecting urban and rural economies.
    2. Glacial Melt Impact: Himalayan glacier retreat destabilizes river systems, affecting long-term water availability for major rivers like the Ganga and Brahmaputra.
    3. Saline Intrusion: Rising sea levels cause salinisation of coastal aquifers, contaminating freshwater sources in coastal regions.
    4. Agricultural Vulnerability: Agriculture contributes ~40% of anthropogenic methane emissions, particularly from rice cultivation, livestock systems, and organic waste.
    5. Food Security Threats: Erratic monsoon cycles disrupt crop productivity and irrigation systems.

    What are Belém Adaptation Indicators?

    1. The Belém Adaptation Indicators are a set of 59-60 voluntary, global measures adopted at the COP30 climate summit in Belém, Brazil (scheduled for November 2025) to track how well countries are adapting to climate change. 
    2. Developed through a two-year UN process under the UAE-Belém Work Programme, they aim to provide a shared, practical language for monitoring resilience against climate impacts like floods, droughts, and heatwaves.

    Key Features of the Belém Adaptation Indicators are as follows:

    1. Purpose: To monitor progress toward the Global Goal on Adaptation (GGA) adopted under the Paris Agreement, focusing on whether communities are becoming safer and better able to cope with climate threats
    2. Focus Areas: The measures look at essential sectors such as water security, food systems, health, housing, early warning systems, ecosystems, and local economies
    3. Scope: The indicators emphasize protecting vulnerable populations, including women, indigenous groups, and people with disabilities
    4. Voluntary Nature: They are designed to be flexible rather than a rigid top-down mandate, allowing countries to adapt them to their national circumstances.

    How do Belém Adaptation Indicators redefine climate governance?

    1. Climate-Resilient Water Systems: Focus on reducing water scarcity and increasing resilience against floods and droughts.
    2. Universal Drinking Water Access: Ensures safe drinking water availability for all communities.
    3. Climate-Resilient Sanitation Infrastructure: Strengthens sanitation systems capable of functioning during extreme climate events.
    4. Multi-Hazard Early Warning Systems: Establishes universal early warning coverage by 2027.
    5. Hydrometeorological Capacity: Strengthens meteorological monitoring and national vulnerability assessments by 2030.

    How is India strengthening water governance to build climate resilience?

    1. Institutional Consolidation: Establishment of the Ministry of Jal Shakti (2019) integrates water governance across sectors.
    2. Water Vision 2047: Aligns national water policy with sustainability, equity, and climate resilience goals.
    3. Aquifer Mapping Programme: National Aquifer Mapping and Management Programme (NAQUIM 2.0) advances aquifer-level planning based on hydrogeological data.
    4. River Rejuvenation: National Mission for Clean Ganga (NMCG) expands focus beyond sewage treatment to biodiversity restoration and river basin management.
    5. Integrated Water Management: Encourages linking scientific hydrology with policy planning.

    What systemic risks threaten India’s climate-water resilience?

    1. Unequal Water Distribution: Water scarcity remains acute and unevenly distributed across regions.
    2. Water-Linked Disasters: Most climate disasters in India are water-related (floods, droughts, cyclones).
    3. Fragile Adaptation Finance: Global climate finance pathways remain uncertain despite projections of $1.3 trillion annually by 2035.
    4. Recovery Bias: Lack of predictable finance shifts focus toward post-disaster recovery rather than long-term resilience planning.
    5. Infrastructure Stress: Water supply systems require climate stress testing and diversification of water sources.

    Why is digital fragmentation a challenge for climate-water governance?

    1. Fragmented Data Systems: Hydrological and meteorological datasets remain distributed across institutions without integration.
    2. Limited AI-Driven Decision Support: Despite large datasets, real-time AI integration in governance remains weak.
    3. Planning Disconnect: Water data is rarely linked to budgeting, crop advisories, insurance mechanisms, or disaster response systems.
    4. Need for Interoperable Platforms: Integration of hydrological data, crop advisory systems, insurance frameworks, and financial flows is essential.

    How can India lead global climate adaptation through water governance?

    1. Policy Convergence: Align national missions such as drinking water coverage, irrigation efficiency, and urban water reforms with climate adaptation.
    2. Digital Public Infrastructure: Utilize India’s strength in digital governance systems to integrate climate-water datasets.
    3. Operational Adaptation: Shift from infrastructure creation to functional system resilience.
    4. Global South Leadership: Demonstrate scalable climate adaptation models applicable to other developing countries.

    Conclusion

    Water systems are emerging as the operational backbone of climate adaptation. India possesses strong institutional foundations, including water governance reforms, digital infrastructure, and river restoration programmes. However, translating policy ambition into measurable climate resilience requires integrating hydrological data, strengthening climate finance, and ensuring equitable water distribution. By aligning national missions with global adaptation frameworks, India can emerge as a leader in climate-resilient water governance for the Global South.

  • Ice patches on melting glaciers greater threat than thought: ISRO scientists

    Why in the News

    A new study by scientists from the Indian Space Research Organisation has identified exposed ice patches on retreating Himalayan glaciers as a key precursor to flash floods. The study examined the August 5, 2025 Dharali flash flood in Uttarakhand that killed nine people and devastated settlements along the Bhagirathi river valley. Satellite imagery revealed exposed ice patches in the nivation zone of the Srikanta glacier shortly before the disaster. (Nivation is defined as the erosion of the ground beneath and around a snow bank, primarily resulting from the processes of alternate freezing and thawing.) This indicates accelerated deglaciation and unstable cryosphere conditions. This finding marks an important shift in understanding Himalayan hazards: disasters may originate not only from glacial lake outburst floods (GLOFs) but also from smaller, previously overlooked cryospheric instabilities linked to warming temperatures.

    What are exposed ice patches?

    1. Exposed ice patches are areas of ancient, stable ice that have become visible on the surface of a glacier or mountain slope after their protective covering of seasonal snow and firn (intermediate ice) has thinned or melted away. 
    2. Unlike the main body of a glacier, which flows like a slow-moving river, these patches are often stationary and act as “prehistoric freezers”

    Reasons for their formation are as follows:

    1. Thinning Insulation: Warmer temperatures reduce the layers of snow and firn that normally insulate the deeper ice.
    2. Ablation: During the ablation period (when a glacier loses more ice/snow than it gains), these patches may emerge on steep, shaded slopes, particularly in nivation hollows where snow traditionally lingers year-round.
    3. Wind Scouring: In some regions, like Antarctica, strong winds can strip away top layers to reveal bright blue patches of older, denser ice.

    How do exposed ice patches signal accelerated glacier retreat in the Himalayas?

    1. Deglaciation indicator: Exposed ice patches in the Srikanta glacier’s ablation zone indicate thinning seasonal snow and firn cover due to rising temperatures.
    2. Satellite evidence: Pre-event satellite imagery showed persistent exposed ice patches on north-northeast facing slopes where snow normally accumulates.
    3. Cryosphere instability: Loss of insulating snow layers accelerates melting and structural weakening of glaciers.
    4. Regional warming effect: Similar processes have been documented in other warming cryosphere regions including the Canadian Arctic and Greenland.

    What role did nivation processes play in triggering the Dharali flash flood?

    1. Nivation process: Erosion of ground beneath snowbanks caused by alternate freezing and thawing cycles.
    2. Formation of nivation hollows: Repeated snow accumulation creates depressions which deepen over time.
    3. Structural instability: In steep Himalayan terrain, nivation hollows accumulate ice, meltwater, and debris.
    4. Trigger mechanism: Collapse of an exposed ice patch within the nivation zone of the Srikanta glacier released meltwater and debris.
    5. Result: Sudden downstream debris flow triggered the Dharali flash flood.

    Why are Himalayan glaciers increasingly vulnerable to cryosphere hazards?

    1. Rapid glacier retreat: Himalayan glaciers are losing ice due to rising regional temperatures.
    2. Snow and firn thinning: Seasonal snow cover that stabilizes glaciers is shrinking.
    3. Steep mountain terrain: High relief areas amplify instability and debris flow risks.
    4. Glacier fragmentation: Smaller unstable ice masses form as glaciers shrink.
    5. Emerging hazard types: Hazards now include not only GLOFs but also ice collapses, debris flows, and cryosphere mass movements.

    How do satellite observations improve early warning systems for glacier disasters?

    1. Pre-event detection: Satellite imagery identified exposed ice patches before the Dharali flood.
    2. Landscape monitoring: Remote sensing helps track glacier retreat and unstable cryosphere zones.
    3. Hazard reconstruction: Earth observation data reconstructs sequences leading to disasters.
    4. Early warning potential: Monitoring exposed ice patches could provide advance signals of possible cryosphere hazards.

    Why must disaster monitoring extend beyond glacial lakes to smaller cryosphere instabilities?

    1. Focus shift: Traditional monitoring emphasizes glacial lake outburst floods.
    2. Overlooked hazards: Small-scale cryosphere instabilities can trigger similar destructive floods.
    3. Regional prevalence: Similar geomorphological conditions exist across much of the Himalayan arc.
    4. Policy implication: Disaster risk assessment must include nivation zones and exposed ice patches.

    Conclusion

    Rapid glacier retreat in the Himalayas is generating new cryosphere hazards beyond traditional glacial lake outburst floods. The Dharali flash flood demonstrates how exposed ice patches and nivation-zone instability can trigger sudden disasters in high-mountain regions. Strengthening satellite monitoring, hazard mapping, and climate-resilient disaster management systems is essential to reduce risks and protect vulnerable Himalayan communities.

    PYQ Relevance

    [UPSC 2024] What is disaster resilience? How is it determined? Describe various elements of a resilience framework. Also mention the global targets of the Sendai Framework for Disaster Risk Reduction (2015-2030).

    Linkage: The Dharali flash flood from glacier ice-patch collapse highlights the need for disaster resilience in fragile Himalayan regions facing climate-induced hazards. It underlines the importance of Sendai Framework goals like risk monitoring, early warning systems, and satellite-based glacier surveillance.