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Subject: Climate Change

1. Global Warming and Issues
2. All about Pollution

  • United Nations World Water Development Report, 2025

    Why in the News?

    On March 21, 2025, the United Nations marked the first-ever World Day for Glaciers, and in conjunction, the United Nations World Water Development Report issued a disturbing warning about the rapid loss of glaciers.

     

    Key Highlights of the Report:

    • Hindu Kush Himalayas (HKH) Glacier Loss: Glaciers are melting 65% faster (2011-2020) than the previous decade, with up to 50% shrinkage by 2100 if global temperatures rise by 1.5-2°C.
    • WMO’s Climate Report: The 2024 climate year was the warmest in 175 years, reinforcing the link between rising temperatures and accelerated glacier melt.
    • Unprecedented Glacier Mass Loss: Over 9,000 billion tonnes of ice lost since 1975, with 450 gigatons lost in 2024 alone.
    • Rising Sea Levels: Melting glaciers contribute to sea level rise, displacing 200,000 to 300,000 people annually and increasing coastal flooding risks.
    • Increased Wildfires and Dust Storms: Rising wildfires and dust storms accelerate glacier melt by darkening their surfaces.
    • Permafrost Thawing: Thawing permafrost releases carbon and nutrients, worsening climate change and increasing landslide risks.
    • Declining Snow Cover: A 7.79% global decline in persistent snow cover from 1979-2022 affects water resources.

    About World Glaciers Day 

    • March 21, 2025, marked the first-ever World Day for Glaciers, aimed at raising awareness about glaciers and the risks posed by their loss due to climate change.
    • It was declared by the UN in its resolution A/RES/77/158 along with the International Year of Glaciers 2025.
    • The day calls for governments, organizations, and individuals to reduce greenhouse gas emissions and adopt sustainable water management practices.
    [UPSC 2019] Consider the following statements:

    1. Global warming might trigger the release of methane gas from these deposits.

    2. Large deposits of ‘methane hydrate’ are found in Arctic Tundra and under the seafloor.

    3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two.

    Select the correct answer using the code given below.

    (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

     

  • [18th March 2025] The Hindu Op-ed: How climate change affects India’s wheat production

    PYQ Relevance:

     Q Discuss the consequences of climate change on food security in tropical countries. (UPSC 2023)

    Reason: This question directly addresses the impact of climate change on food security.

    Mentor’s Comment:  UPSC mains have always focused on the strategy of consequences of climate change on the food security (2023) and the ‘Climate Change’ is a global problem (2017).

    Heat waves lead to health crises, crop losses, water shortages, and increased energy demand. In 2023, severe heat in India caused record-breaking temperatures, affecting wheat production in Punjab and Haryana. For example, The Indian state of Bihar had the highest number of heat wave days in 2023, with a total of 18 days. This was followed by the states of Andhra Pradesh and Odisha, both having experienced a total of 15 days of heat waves that year.

    Today’s editorial discusses the impact of Extreme heat in India, providing valuable insights for GS Paper 3 in UPSC Mains answer writing.

    _

    Let’s learn!

    Why in the News?

    This year, India experienced its hottest February in 124 years. The India Meteorological Department (IMD) has warned that March will also be hotter than usual, with more days of extreme heat.

    What are the major wheat-producing states in India?

    • Uttar Pradesh is the largest wheat producer, contributing approximately 31.77% to India’s total wheat output. In the crop year 2023-24, it produced around 35.34 million tonnes of wheat from an area of 9.53 million hectares. Example: Districts like Meerut, Muzaffarnagar, and Agra are significant contributors, utilizing both traditional and modern agricultural practices to achieve high yields.
    • Madhya Pradesh ranks second, accounting for about 20.98% of the national production. The state produced approximately 22.58 million tonnes in the same crop year. Example: The Malwa plateau region, particularly districts like Indore and Ujjain, benefits from black soil and moderate temperatures, which are conducive to wheat cultivation.
    • Punjab Known as the “Granary of India,” contributes around 13.87% to India’s wheat output, with a production of about 17.74 million tonnes. Example: Major districts such as Amritsar and Ludhiana utilize advanced farming techniques and well-developed irrigation systems to maintain high productivity levels.

    Why is wheat primarily grown in these regions?

    • Agro-Climatic Conditions – These states have a cool winter and warm summer, which is ideal for wheat cultivation. The Rabi season (sown in November-December, harvested in March-April) aligns perfectly with the climate. Example: The Malwa plateau in Madhya Pradesh benefits from moderate temperatures that support high wheat yields.
    • Fertile Soil – These regions have alluvial and black soil, which retain moisture and provide essential nutrients for wheat growth. The soil is well-suited for irrigated farming. Example: The Indo-Gangetic plains of Uttar Pradesh and Punjab have deep, fertile alluvial soil, which supports extensive wheat cultivation.
    • Irrigation Facilities – These states have well-developed canal and groundwater irrigation systems, ensuring a stable water supply for wheat crops, which require controlled irrigation. Example: Punjab’s extensive canal network, supported by the Bhakra Nangal Dam, ensures year-round irrigation, enabling high wheat productivity.

    Why is extreme heat during the wheat harvest season a serious concern for India’s food security and economy?

    • Reduced Wheat Yield: Extreme heat accelerates wheat ripening, leading to shorter grain-filling periods and lighter grains. This results in lower overall production, affecting food availability. Example: In 2022, a sudden heatwave in March reduced India’s wheat output from the projected 111 million tonnes to ~107 million tonnes.
    • Lower Grain Quality: High temperatures increase protein content but reduce starch accumulation, making wheat harder and affecting its milling quality. Example: Farmers in Punjab and Haryana reported lower market prices in 2023 due to poor grain quality caused by excessive heat.
    • Impact on Food Security: Wheat is a staple for a significant portion of India’s population. Production shortfalls can lead to food shortages, disproportionately affecting low-income communities. The 2025 heatwave poses a serious threat to wheat and rice production, potentially leading to a 6-10% decline, thereby jeopardizing food security for millions.
    • Economic Losses for Farmers: Heat stress forces farmers to spend more on irrigation, fertilizers, and pest control, increasing costs while reducing yields, leading to financial distress. Example: Farmers in Madhya Pradesh and Rajasthan faced heavy losses in 2023 due to unexpected temperature spikes during the grain-filling stage.
    • Disruptions in Procurement & Trade: Lower production impacts government wheat procurement, affecting stock availability for schemes like the Public Distribution System (PDS) and exports. Example: India had to ban wheat exports in 2022 to ensure domestic supply, disrupting global markets and trade agreements.

    What steps have been taken by the Indian government?

    • Minimum Support Price (MSP) – The government announces a minimum support price for wheat every year to ensure farmers get a fair price and are encouraged to produce more. Example: In 2023-24, the MSP for wheat was ₹2,275 per quintal, benefiting farmers in states like Punjab and Uttar Pradesh.
    • Subsidized Inputs – The government provides subsidies on seeds, fertilizers, and electricity to make wheat farming more affordable and increase productivity. Example: Under the National Food Security Mission (NFSM), high-yield variety (HYV) seeds and soil nutrients are distributed to farmers in states like Madhya Pradesh.
    • Irrigation Development – Investment in major irrigation projects has improved water availability, reducing dependence on erratic rainfall. Example: The Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) has helped expand irrigation in wheat-producing states like Punjab and Uttar Pradesh.
    • Research & Development (R&D) – The Indian Council of Agricultural Research (ICAR) and agricultural universities develop climate-resilient, high-yield wheat varieties to enhance productivity. Example: The DBW-187 wheat variety, developed by ICAR, has helped increase yields in states like Haryana and Madhya Pradesh.
    • Procurement & Storage Infrastructure – The Food Corporation of India (FCI) and state agencies procure large quantities of wheat to ensure food security and stabilize market prices. Example: In 2023, FCI procured over 26 million tonnes of wheat, mainly from Punjab, Haryana, and Uttar Pradesh, ensuring buffer stock availability.

    What adaptation and mitigation strategies can policymakers implement to protect wheat crops from rising temperatures? (Way forward)

    • Development of Heat-Resistant Wheat Varieties: Traditional wheat varieties are vulnerable to heat stress, reducing yield and quality. Example: The Indian Council of Agricultural Research (ICAR) has developed HD 3385, a climate-resilient wheat variety with better heat tolerance, which is expected to perform well in rising temperatures.
    • Shifting Sowing Dates and Crop Calendars: Adjusting the sowing period can help wheat plants escape extreme heat during critical growth phases. Example: The Punjab Agricultural University (PAU) has recommended advancing wheat sowing to mid-October instead of November to allow crops to mature before peak heat in March-April.
    • Improved Irrigation and Water Management: Heat stress increases water loss from soil and plants, requiring efficient irrigation. Example: The “Per Drop More Crop” scheme under Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) promotes micro-irrigation (drip and sprinkler systems) to optimize water use in wheat-growing states like Uttar Pradesh and Punjab.
    • Promoting Conservation Agriculture Practices: Practices like zero tillage and residue mulching help retain soil moisture and lower soil temperature. Example: Zero tillage wheat in Haryana and Punjab has shown 5-10% higher yields and reduced water usage compared to conventional plowing methods.
    • Climate Forecasting and Early Warning Systems: Advanced weather predictions help farmers plan for extreme heat events. Example: The Gramin Krishi Mausam Seva (GKMS) provides real-time agro-advisories, warning farmers about heatwaves and recommending protective measures like additional irrigation and mulching.
  • Air Pollution will Lower India’s Solar Generation Capacity: Study

    Why in the News?

    A new study by IIT Delhi, published in Environmental Research Letters (November 2024), reveals that air pollution and climate change are undermining solar panel efficiency in India.

    Key Findings of the IIT Delhi Study

    • Efficiency Loss Forecast:
      • Scenario 1 (Moderate climate efforts): Solar panel efficiency is projected to decline by more than 2.3% by 2041-2050.
      • Scenario 2 (Weak climate action, strong air pollution control): Efficiency drops by 2.3%, amounting to at least 840 GWh loss annually.
    • Primary Causes:
      • Solar radiation decline is the biggest factor.
      • Temperature increase follows closely, with a 2°C rise in cell temperature predicted by mid-century.
      • Wind speed variations have minimal but present impact.
    • Kerala and Northeast regions could see higher solar potential due to reduced cloud cover, offering opportunities for future solar investments.

    India’s Solar Capacity

    • India, is the 5th-largest solar power producer globally.
    • India has achieved a significant milestone with a total installed solar capacity of 100.33 GW as of January 31, 2025.
    • India’s solar capacity has increased 35 times in the past decade, growing from 2.82 GW in 2014 to 100 GW in 2025.
    • PM SuryaGhar Muft Bijli Yojana has been a key driver in promoting rooftop solar, with nearly 9 lakh rooftop installations already completed.
    • A record 24.5 GW of solar capacity was added in 2024, more than doubling the installations compared to 2023.
    • In 2024, 18.5 GW of utility-scale solar capacity was installed, a nearly 2.8 x increase compared to the previous year.
    • Rajasthan, Gujarat, Tamil Nadu, Maharashtra, and Madhya Pradesh are the top-performing states, contributing significantly to India’s solar installations.
    • India’s solar module production capacity has surged from 2 GW in 2014 to 60 GW in 2024, establishing the country as a global leader in solar manufacturing.

    PYQ:

    [2020] India has immense potential for solar energy though there are regional variations in its developments. Elaborate.

    [2018] With reference to solar power production in India, consider the following statements:

    1. India is the third largest in the world in the manufacture of silicon wafers used in photovoltaic units.

    2. The solar power tariffs are determined by the Solar Energy Corporation of India.

    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

     

  • Why global sea ice cover has dipped to record low — what this means

    Why in the News?

    Between February 8 and 13, the total area of sea ice in the Arctic and Antarctic shrank to 15.76 million sq km, breaking the previous record low of 15.93 million sq km from early 2023, according to a BBC analysis of data from the US National Snow and Ice Data Center (NSIDC).

    What are the reasons for the record low?

    • Warm Air and Ocean Temperatures: Elevated air and sea temperatures have significantly contributed to the melting of both Arctic and Antarctic sea ice. Warmer conditions, particularly towards the end of summer, have led to increased melting rates, especially in the Antarctic region.
    • Wind Patterns: Changes in atmospheric dynamics, including stronger westerly winds associated with the Southern Annular Mode (SAM), have disrupted sea ice formation and stability. In the Antarctic, these winds can break apart ice more easily due to its thinner and more mobile nature compared to the thicker Arctic ice.
    • Delayed Freezing: In the Arctic, a delayed freezing process around regions like Hudson Bay has occurred due to unusually warm ocean temperatures, preventing the formation of new ice during winter.
    • Increased Freshwater Input: The melting of glaciers and ice shelves adds freshwater to the oceans, which can alter ocean stratification and impact sea ice formation. While freshwater can initially encourage sea ice growth in some contexts, it also leads to changes that may ultimately reduce overall sea ice extent.
    • Feedback Mechanisms: The loss of sea ice creates feedback loops that further exacerbate warming. As less ice remains to reflect sunlight, more solar radiation is absorbed by the ocean, leading to increased temperatures and further melting of ice.

    What does “dip” mean?

    • In the context of the recent report on sea ice, the term “dip” refers to a significant decrease or reduction in the extent of sea ice coverage. Specifically, it denotes the record low measurement of combined Arctic and Antarctic sea ice, which fell to 15.76 million square kilometres, marking a decline from previous levels.
    • This “dip” highlights the alarming trend of diminishing sea ice, which is crucial for regulating global temperatures and maintaining ecological balance in polar regions.

    What could be its impact?

    • Accelerated Global Warming: Less sea ice means more ocean water is exposed to sunlight, absorbing heat instead of reflecting it. Example: The Arctic is warming nearly four times faster than the global average, leading to extreme weather patterns worldwide.
    • Disruptions in Ocean Currents: Melting sea ice releases freshwater into the ocean, reducing salinity and slowing down deep-water circulation. Example: The Atlantic Meridional Overturning Circulation (AMOC), which influences global climate patterns, is weakening due to increased freshwater from melting Arctic ice.
    • Threat to Marine Ecosystems: Sea ice loss affects marine species dependent on stable ice conditions for survival. Example: Polar bears rely on sea ice for hunting seals. As ice declines, they face starvation and habitat loss. Similarly, krill populations in Antarctica, a key food source for whales and penguins, are declining due to changing ice conditions.
    • More Extreme Weather Events: Changes in polar ice influence atmospheric circulation, leading to unpredictable weather. Example: The weakening of the polar vortex due to Arctic warming has been linked to severe cold waves in North America and Europe, such as the Texas winter storm in 2021.
    • Coastal and Infrastructure Damage: Rising temperatures due to ice melt contribute to permafrost thawing, which destabilizes infrastructure in polar regions. Example: In Siberia, Russia, thawing permafrost has caused buildings and roads to collapse, posing a major economic and environmental challenge.

    What measures have been taken at the international level?

    • International Year of Glaciers’ Preservation (2025): The World Meteorological Organization (WMO) and UNESCO have declared 2025 as the International Year of Glaciers’ Preservation. This initiative aims to raise awareness about the importance of glaciers and ice sheets, which store a significant portion of the world’s freshwater, and to promote actions to mitigate their melting.
    • Global Cryosphere Watch: The WMO’s Global Cryosphere Watch network, which includes scientists from the Intergovernmental Panel on Climate Change (IPCC), has been actively monitoring and reporting on cryosphere changes. Their findings highlight alarming trends in ice loss and emphasize the need for immediate action to address these issues.
    • Collaborative Research Initiatives: Various international scientific collaborations are underway to study and model the impacts of climate change on sea ice. These efforts involve researchers from multiple countries working together to gather data, analyze trends, and develop strategies for adaptation and mitigation.
    • Climate Action Frameworks: Global climate agreements, such as the Paris Agreement, encourage countries to commit to reducing greenhouse gas emissions, which are a primary driver of climate change affecting sea ice.
    • Public Awareness Campaigns: International organizations are engaging in campaigns to educate the public about the significance of sea ice and glaciers in regulating global climate systems.

    Way forward: 

    • Strengthening Climate Mitigation Efforts: Nations must enhance commitments under the Paris Agreement by accelerating renewable energy adoption, reducing greenhouse gas emissions, and implementing carbon pricing mechanisms to curb global warming.
    • Enhancing Polar and Oceanic Monitoring: Strengthen international collaboration for real-time satellite monitoring, expand scientific research on polar ice dynamics, and develop adaptive strategies to protect vulnerable ecosystems and coastal communities.

    Mains PYQ:

    Q How do the melting of the Arctic ice and glaciers of the Antarctic differently affect the weather patterns and human activities on the Earth? Explain. (UPSC IAS/2021)

  • Coral Reefs in the Gulf of Eilat recover after a ‘Shutdown’

    Why in the News?

    Researchers have discovered a significant pause in coral reef growth in the Gulf of Eilat/Aqaba during the late Holocene period.

    Key Highlights of the Study:

    • The study identified a 4,400 – 1,000-year hiatus in coral growth, similar to events observed in Mexico, Brazil, and Australia.
    • Scientists attribute this temporary halt to a sea-level drop caused by tectonic activity and cooling events, which exposed coral reefs and disrupted their development.
    • Despite this, the reef recovered by recolonizing from deeper coral communities, showcasing its natural resilience.

    Coral Reefs in the Gulf of Eilat recover after a ‘Shutdown'

    About Gulf of Eilat

    • Also known as the Gulf of Aqaba, it is a narrow extension of the Red Sea, located between the Sinai Peninsula (Egypt) and the Arabian Peninsula.
    • It connects to the Red Sea through the Strait of Tiran and borders Egypt, Israel, Jordan, and Saudi Arabia.
    • The city of Eilat (Israel) and Aqaba (Jordan) lie along its shores, making it a strategic trade and tourism hub.

    Geographical and Political Significance:

    • Strategic Trade Route: Provides access to the Indian Ocean via the Red Sea, critical for Israel and Jordan’s maritime trade.
    • Bordering Multiple Nations: Shares coastlines with Egypt, Israel, Jordan, and Saudi Arabia, making it a key area for regional diplomacy and security.
    • Tourism & Marine Biodiversity: Known for coral reefs and marine life, attracting divers and boosting the economies of Eilat and Aqaba.
    • Geopolitical Sensitivity: The Strait of Tiran has been historically significant in Arab-Israeli conflicts, especially during the Six-Day War (1967) when Egypt blocked Israeli access.
    • Energy & Trade Importance: It is an alternative route for oil shipments and goods trade, reducing reliance on the Suez Canal.

    PYQ:

    [2014] Which of the following have coral reefs?

    1. Andaman and Nicobar Islands

    2. Gulf of Kachchh

    3. Gulf of Mannar

    4. Sunderbans

    Select the correct answer using the code given below:

    (a) 1, 2 and 3 only

    (b) 2 and 4 only

    (c) 1 and 3 only

    (d) 1, 2, 3 and 4

     

  • [12th February 2025] The Hindu Op-ed: A role for India in South-South climate cooperation

    PYQ Relevance:

    Q) Clean energy is the order of the day.’ Describe briefly India’s changing policy towards climate change in various international fora in the context of geopolitics. (UPSC CSE 2018)

     

    Mentor’s Comment: UPSC mains have always focused on Climate Change (2017), and COP 26 (2021).

    In the Climate Change Performance Index (CCPI) 2025, India ranks among the top 10 climate performers globally, underscoring its commitment to climate action. India has been recognized for its significant role in South-South climate cooperation, reflecting its leadership in fostering collaboration among developing nations to address climate change. 

     

    Today’s editorial highlights how South-South cooperation can help achieve climate goals, promote sustainable development, and empower developing countries to meet their climate targets, drawing attention to India’s strategic opportunities and responsibilities in this area. This content would help in substantiation of answers in Mains GS Paper III (Environment and Biodiversity).

    _

    Let’s learn!

    Why in the News?

    India’s potential role in fostering climate cooperation between developing nations through South-South cooperation in the context of the Paris Agreement is needed for the  global solutions to tackle climate change.

    How does Article 6 of the Paris Agreement benefit India in achieving its climate goals?

    • Carbon Markets: Under Article 6.2, countries can trade carbon credits to meet their emissions reduction targets. India can participate in these carbon markets, generating revenue by selling surplus carbon credits earned through emission reductions in sectors like renewable energy, energy efficiency, and afforestation.
        • By engaging in carbon trading, India can attract foreign investments from companies in developed countries looking to offset their emissions. This can provide funding for clean energy projects, supporting India’s transition to a low-carbon economy.
    • Cooperative Approaches: Article 6.4 establishes a global carbon market mechanism, similar to the Clean Development Mechanism (CDM) under the Kyoto Protocol, but with improvements. India could utilize this mechanism to undertake joint projects with other countries that help reduce emissions while fostering sustainable development.
      • Through cooperative approaches, India can access advanced technologies, practices, and expertise from other countries, enabling its industries to adopt cleaner technologies and improve energy efficiency, contributing to its climate and development goals.
    • Non-Market Approaches:
      • Article 6.8 promotes non-market mechanisms, which focus on facilitating actions like capacity-building, finance, and knowledge sharing to address climate change. This can help India strengthen its national capabilities to implement climate policies and adapt to the impacts of climate change, particularly in vulnerable regions.
      • India, being highly vulnerable to the effects of climate change, can benefit from non-market approaches to enhance its adaptive capacities and resilience, addressing critical sectors like agriculture, water resources, and infrastructure.
    • Flexibility in Meeting Targets:
      • The flexibility provided by Article 6 allows India to find the most cost-effective solutions for emission reductions, especially in sectors where technology deployment is expensive or challenging. It provides an opportunity to meet its Nationally Determined Contributions (NDCs) in a way that balances economic growth with environmental sustainability.

    What are the potential challenges India faces in utilizing ITMOs and engaging in international climate finance?

    • Monitoring, Reporting, and Verification (MRV) Systems: India’s current MRV systems for tracking emissions reductions may not meet the rigorous standards required for ITMOs, which are crucial for ensuring transparency and accountability in carbon markets.
      • Inadequate MRV mechanisms could hinder India’s ability to accurately quantify and report emission reductions, limiting its participation in carbon trading and climate finance.
    • Accessing Climate Finance: Despite being a major developing country, India faces challenges in accessing sufficient and predictable climate finance from international sources, as the global financing mechanisms often favor smaller or more vulnerable nations.
      • Limited access to finance can slow down India’s ability to implement large-scale climate projects, especially in sectors like renewable energy, adaptation, and infrastructure development.
    • Ensuring Environmental Integrity: While ITMOs enable carbon trading, there’s a risk of “low-quality” credits or “double counting” (where emissions reductions are claimed by multiple parties), which could undermine the credibility and environmental integrity of the system.
      • If India is not careful in ensuring robust methodologies for generating and trading ITMOs, it might face challenges in maintaining the credibility of its climate commitments, affecting its international reputation.
    • Domestic Policy and Institutional Coordination: India’s domestic policies on climate change may not be fully aligned with the requirements of international climate finance mechanisms or ITMO systems. There is also a need for better coordination among various ministries and stakeholders to implement and track climate action effectively.
      • Misalignment between international climate goals and domestic policies could result in inefficiencies and missed opportunities to access ITMOs and climate finance.

    What are the opportunities for India under South-South cooperation via Article 6.2?

    • Carbon Trading with Fellow Developing Countries: India can collaborate with neighbouring countries like Sri Lanka, Bangladesh, and others in the South Asian region to work together to reduce emissions through renewable energy, afforestation, or energy efficiency programs.
      • India could sell any surplus carbon credits generated through its own emission reduction efforts to other developing countries that need help meeting their own NDCs (Nationally Determined Contributions). This allows India to both achieve its climate goals and potentially generate revenue.
    • Technology and Knowledge Transfer: India has already made significant progress in solar energy and can offer valuable lessons and technologies to fellow developing countries.
      • India can also help other countries develop adaptation strategies for climate change impacts, such as water management techniques, disaster preparedness, and climate-resilient infrastructure.
      • In return, India could receive new technologies, methods, and knowledge to enhance its own climate resilience.
    • Joint Ventures for Clean Energy Projects: India can partner with other developing countries to co-develop large-scale renewable energy projects, such as solar, wind, or hydropower. Joint initiatives could be supported by carbon markets, with emission reductions which could attract investments, expertise, and improve access to clean energy technologies.
      • By collaborating with other developing countries, India can contribute to the development of affordable, scalable solutions that are tailored to the specific needs of developing nations.
      • These solutions could be implemented locally, reducing emissions and improving energy access.
    • Strengthening Capacity and Institutional Frameworks: South-South cooperation can help India and other developing countries to assist in establishing frameworks for monitoring, reporting, and verifying (MRV) emissions reductions, benefiting both India and its partner countries.
      • India can help south countries in refining its strategies and implementing the best practices that suit their own development contexts.
    • Leveraging Climate Finance: India, by engaging in South-South cooperation, could also have access to international financial instruments that make climate action more affordable.
      • This would be particularly beneficial in sectors where India faces challenges in scaling up clean technologies, like electric vehicles, or in regions like rural areas that require adaptation interventions.
  • Why Greenland’s crystal blue lakes have turned brown?

    Why in the News?

    A new study has revealed that over 7,500 lakes in western Greenland have turned brown, suffered water quality deterioration, and started emitting carbon due to extreme weather events in 2022.

    About Greenland and Its Lakes

    • Greenland, the world’s largest island, is covered by a massive ice sheet that holds nearly 8% of the world’s freshwater.
    • The island is home to thousands of glacial-fed lakes, which are crystal blue due to their pristine water quality and low organic content.
    • These lakes play a crucial role in providing drinking water, supporting biodiversity, and storing atmospheric carbon by acting as natural carbon sinks.

    What are the reasons?

    • Extreme Weather in 2022: Greenland saw record-breaking heatwaves and heavy rainfall instead of the usual snowfall.
    • Permafrost Thawing: Rising temperatures melted permafrost, releasing large amounts of organic carbon, iron, and other minerals into the lakes.
    • Atmospheric Rivers: These long, narrow streams of water vapor in the sky caused intense precipitation, leading to large-scale runoff of organic material and sediments into the lakes.
    • Loss of Light Penetration: Increased sedimentation turned the lakes murky brown, reducing sunlight penetration and affecting phytoplankton, which play a key role in carbon absorption.

    Why this Study is important?

    • The study found that changes in the lakes occurred within months instead of centuries, signaling an unprecedented climate impact.
    • Once natural carbon absorbers, the lakes are now releasing 350% more carbon dioxide, accelerating global warming.
    • The lakes, which supply drinking water, now contain higher levels of organic pollutants, affecting both humans and aquatic ecosystems.
    • Studies suggest atmospheric rivers will become 50–290% more frequent by the end of the century, leading to widespread changes in other freshwater ecosystems worldwide.
    • The study adds to growing evidence that Earth’s natural carbon sinks are failing, posing a major challenge to climate mitigation efforts.

    PYQ:

    [2011] The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?

    (a) Ice is a bad conductor of heat

    (b) Since the surface of the lake is at the same temperature as the air, no heat is lost

    (c) The density of water is maximum at 4 °C

    (d) None of the statements A, B and C given above is correct.

  • The Union Budget as a turning point for climate action

    Why in the News?

    Everyone will be watching Finance Minister Nirmala Sitharaman on February 1 as she presents the FY26 Budget, which needs to focus on climate issues and help India reach its Net-Zero goal by 2030.

    How will the proposed climate finance taxonomy influence investment in sustainable projects?

    • Standardization and Clarity: The proposed climate finance taxonomy will standardize definitions of green finance, providing clarity and reducing ambiguity for investors. This will help in distinguishing genuinely sustainable projects from those that are not, thereby building investor confidence.
    A green finance taxonomy is a classification system that defines which activities, investments, or projects are considered “green” or environmentally sustainable.
    • Increased Investment: By standardizing green finance definitions, the taxonomy can attract a significant portion of the ₹162.5 trillion ($2.5 trillion) needed to achieve India’s Nationally Determined Contributions (NDCs) by 2030. This is crucial for scaling up investments in sustainable projects.
    • Market Readiness: The taxonomy will necessitate the development of institutional and technical infrastructure, including market readiness programs, verification systems, and capacity building of financial institutions. This will create a robust ecosystem for green investments.
    • Differential Tax Treatment: The Budget could introduce differential tax treatment for investments aligned with the taxonomy, making green investments more attractive compared to conventional ones.

    What specific measures are needed to incentivize green investments in the upcoming budget?

    • Expanding PLI Schemes for Solar Module Supply Chain: India’s domestic solar module manufacturing capacity stands at 18-20 GW, while the annual demand is 30-35 GW. Imported solar panels are 65% cheaper than domestically produced ones.
      • So, need to expand the scope of PLI schemes can enhance domestic capacity and reduce dependency on imports.
    • Public-Private Partnerships for Railway Renewable Energy: Indian Railways has 51,000 hectares of land available for renewable energy projects, yet only 142 MW of solar capacity has been installed so far, against a potential of 5 GW. Public-private partnerships can unlock this potential and align with the Railways’ decarbonization goals.
    • Establishing a Climate Action Fund for CBAM Compliance: India’s exports of CBAM-covered products to the EU amount to $8.22 billion annually. MSMEs, which contribute 30% of GDP and 45% of exports, often lack resources for decarbonization. A dedicated Climate Action Fund could support MSMEs in meeting compliance requirements and maintaining competitiveness.
    • Fiscal Allocations for the RESCO Model: Only 6.34 lakh (4.37%) of 1.45 crore registrations under the PM Surya Ghar Muft Bijlee Yojana have been completed. Additionally, 60% of Indian households find rooftop solar installations unaffordable due to upfront costs.
      • The RESCO model can help by enabling financing solutions to bridge this affordability gap.
    • Tax Deductions and Depreciation Benefits for Circular Economy: India generates 62 million tonnes of waste annually, with only 30% being recycled. Transitioning to a circular economy could contribute ₹40 lakh crore ($624 billion) annually by 2050.
      • Tax incentives and accelerated depreciation benefits can encourage private sector participation in recycling and resource efficiency.

    What are the steps taken by the Government of India? 

    • National Action Plan on Climate Change (NAPCC): Launched in 2008, this comprehensive framework includes eight missions aimed at addressing climate change through renewable energy promotion, enhanced energy efficiency, sustainable habitat development, and more.
      • Key missions include the National Solar Mission and the Green India Mission, which focus on increasing solar energy usage and enhancing forest cover, respectively.
    • Commitment to Renewable Energy: India aims to achieve 500 GW of non-fossil fuel energy capacity by 2030 and has pledged to reduce total projected carbon emissions by one billion tonnes.
    • Adaptation and Resilience Initiatives: The government has established the National Adaptation Fund on Climate Change (NAFCC) to support projects that enhance resilience against climate impacts.
      • On the other hand, the State Action Plan on Climate Change (SAPCC) aligns with NAPCC objectives, focusing on sector-specific adaptations in agriculture, water management, and biodiversity.

    How can India ensure accountability and transparency in its climate financing efforts? (Way forward)

    • Sovereign Green Bond Framework: Establish a sovereign green bond framework specifically for financing circular economy infrastructure, ensuring that funds are allocated transparently and used for their intended purposes.
    • Verification Systems: Implement robust verification systems to ensure that projects funded through green finance taxonomy are genuinely sustainable and meet the required environmental standards.
    • Capacity Building: Invest in capacity building of financial institutions to effectively implement the climate finance taxonomy, including training programs and technical support.
    • Government Expenditure Classification: Commit to classifying government expenditure according to green criteria, ensuring that public funds are directed towards sustainable projects.
    • Regular Reporting and Audits: Mandate regular reporting and audits of climate-related expenditures and projects to ensure accountability and transparency. This will help in tracking progress and making necessary adjustments to policies and allocations.

    Mains PYQ:

    Q  ‘Clean energy is the order of the day.’ Describe briefly India’s changing policy towards climate change in various international fora in the context of geopolitics. (UPSC IAS/2022)

  • With 7 fresh members from Africa, Global Plastic Action Partnership expands to 25 countries: WEF

    Why in the News?

    The Global Plastic Action Partnership (GPAP), an initiative of the World Economic Forum, has reached a significant milestone by expanding its network to include 25 countries.  This expansion introduces seven new members: Angola, Bangladesh, Gabon, Guatemala, Kenya, Senegal, and Tanzania, which together represent a population of more than 1.5 billion people.

    What is the Global Plastic Action Partnership (GPAP)?

    • The Global Plastic Action Partnership (GPAP) is an initiative launched by the World Economic Forum aimed at combating plastic pollution worldwide.
    • It focuses on promoting a circular economy for plastics, emphasizing reuse, recycling, and sustainable management to mitigate the environmental impacts of plastic waste.

    What are the key components of GPAP?

    • Governance and Structure: GPAP operates through a robust governance framework consisting of a Governing Council, Steering Board, and Advisory Committee, involving senior executives from founding organisations such as the World Economic Forum.
      • For example, in Indonesia, the governance structure facilitated the creation of the National Plastic Action Partnership (NPAP), which oversees the implementation of strategies to reduce marine plastic leakage.
    • National Action Roadmaps: GPAP collaborates with various stakeholders to create National Action Roadmaps tailored to specific countries.
      • For instance, Vietnam’s National Plastic Action Partnership launched its roadmap in 2022, targeting a 50% reduction in plastic waste by 2030 through strategies.
    • Investment Mobilization: GPAP focuses on aligning financial resources with plastic waste reduction goals. For example, in Ghana, GPAP worked with the government and private sector to attract investments for waste recycling infrastructure.
    • Global Collaboration Network: GPAP acts as a platform connecting stakeholders globally to address plastic pollution.
      • For example, it facilitated the sharing of best practices between countries like Indonesia and Ghana, allowing them to adopt innovative solutions such as advanced recycling technologies and extended producer responsibility (EPR) frameworks.

    What is the significance of expanding GPAP to include seven new African countries?

    • Strengthened Global Coalition: With this expansion, GPAP now encompasses 25 countries representing over 1.5 billion people, making it the largest global initiative focused on combating plastic pollution.
    • Addressing Urgent Environmental Challenges: The inclusion of these countries underscores a growing recognition of the urgent need to tackle plastic pollution, which poses severe threats to ecosystems, biodiversity, and human health.
    • Fostering Regional Collaboration: The addition of new African countries facilitates regional collaboration and knowledge sharing on best practices for waste management and recycling.
    • Economic Growth and Job Creation: GPAP’s initiatives are expected to stimulate economic growth through the promotion of sustainable materials and recycling infrastructure.
    • Commitment to Circular Economy Principles: The expansion reflects a commitment to advancing circular economy principles, which focus on reusing and recycling plastics rather than relying on single-use materials.

    What are the anticipated environmental and economic impacts of GPAP’s initiatives?

    • Decreased Greenhouse Gas Emissions: The initiative targets a reduction in greenhouse gas emissions associated with plastic production and waste management, which currently accounts for an estimated 1.8 billion tonnes annually. By promoting a circular economy, GPAP aims to mitigate emissions, particularly methane from landfills.
      • By implementing National Action Roadmaps, the partnership seeks to reduce annual land-based plastic leakage by approximately 80% by 2040 compared to business-as-usual scenarios.
      • By transitioning to a circular economy model, GPAP initiatives can help countries recover lost economic value from plastics, estimated at $80 billion to $120 billion annually due to inefficiencies in current systems.
    • Job Creation: GPAP’s efforts in developing sustainable waste management practices are expected to create significant employment opportunities, potentially generating up to 6 million green jobs globally by 2030. This includes safer jobs for informal waste workers who play a crucial role in recycling and waste management.
    • Investment Mobilization: The partnership has already mobilized substantial investments, such as $3.1 billion, aimed at supporting projects that tackle plastic waste. This influx of capital can stimulate local economies and drive innovation in sustainable materials and recycling technologies.

    Way forward: 

    • Strengthen Policy Frameworks and Partnerships: Collaborate with governments, private sectors, and civil society to establish robust policies to enforce regulations and promote extended producer responsibility (EPR) frameworks to drive systemic change.
    • Enhance Innovation and Infrastructure: Invest in advanced recycling technologies for scalable waste management infrastructure and research to develop sustainable alternatives, fostering a circular economy while creating green jobs and reducing plastic pollution.

    Prelims PYQ:

    In India, ‘extended producer responsibility’ was introduced as an important feature in which of the following ? (UPSC IAS/2019)

    (a) The Bio-medical Waste (Management and Handling) Rules, 1998

    (b) The Recycled Plastic (Manufacturing and Usage) Rules, 1999

    (c) The e-Waste (Management and Handling) Rules, 2011

    (d) The Food Safety and Standard Regulations, 2011

  • What is Keeling Curve?

    Why in the News?

    Atmospheric CO₂ levels hit a record high in 2024 due to wildfires and human activities, as shown by the Keeling Curve, a 67-year record maintained at Mauna Loa Observatory since 1958.

    What is Keeling Curve?

    What is Keeling Curve?

    • The Keeling Curve is a long-term record of atmospheric CO concentrations, initiated by Charles David Keeling in 1958 at the Mauna Loa Observatory, Hawaii.
    • It tracks the rise in CO levels and provides evidence of the impact of human activities on climate change.
    • Named after Charles David Keeling, it has become a globally recognized tool for understanding global warming.

    Significant Features and Sources:

    • Steady Upward Trend: Demonstrates a consistent rise in atmospheric CO₂ levels since 1958, primarily due to fossil fuel combustion and deforestation.
    • Seasonal Fluctuations:
      • CO₂ levels decrease during spring and summer as plants absorb CO₂ through photosynthesis.
      • Levels increase during fall and winter when plant decay releases CO₂.
    • Initial Measurements: Recorded CO₂ levels at 315 ppm in 1958.
    • Current Levels: As of January 2025, CO₂ concentrations have reached 427.1 ppm, the highest in millions of years.
    • Data Sources: Measurements are taken from Mauna Loa Observatory and other global monitoring stations.

    Observations around the Curve

    • Key Milestones:
      • 1988: CO₂ levels reached 350 ppm, drawing global attention to climate change.
      • 2023: Levels exceeded 420 ppm, marking a critical point in atmospheric history.
      • 2024: Record growth of 3.58 ppm in average annual CO₂ concentrations compared to 2023.
    • Contributing Factors:
      • El Niño: Surface temperature rise in the Pacific Ocean boosted CO₂ emissions during 2024, exacerbated by wildfires in North and South America.
      • Anthropogenic Emissions: Burning fossil fuels and land-use changes remain major contributors.
    • Global Implications:
      • Contradicts IPCC scenarios for limiting global warming to 1.5°C, as emissions continue to rise.
      • Record increases in CO₂ levels during El Niño events highlight the interplay between natural phenomena and human activities.

    PYQ:

    [2011] Consider the following:

    1. Photosynthesis

    2. Respiration

    3. Decay of organic matter

    4. Volcanic action

    Which of the above add carbon dioxide to the carbon cycle on Earth?

    (a) 1 and 4 only

    (b) 2 and 3 only

    (c) 2, 3 and 4 only

    (d) 1, 2, 3 and 4