climate change

WATER BANKRUPTCY: MEANING, CAUSES, IMPACT, CHALLENGES, WAY FORWARD

A UN report warns of “water bankruptcy,” where withdrawals exceed natural recharge. India, with 17% of the global population but 4% of freshwater, faces rising stress. Climate change and governance failures worsen crises like Bengaluru’s. Solutions include integrated water management, sponge cities, efficient irrigation, and revived harvesting systems.

FRESHENING OF THE SOUTHERN INDIAN OCEAN: CAUSES AND IMPACTS

A new study finds rapid freshening in the Southern Indian Ocean due to warming-driven wind shifts moving water from the Indo-Pacific Freshwater Pool. This creates stratification that traps heat, blocks nutrients, harms fisheries, may weaken AMOC, and heighten cyclones and marine heatwaves.

ANTARCTIC TIPPING POINTS: CRISIS, GLOBAL IMPACT, AND INDIA’S VULNERABILITY

A Nature Climate Change study indicates the Antarctic Ice Sheet has multiple tipping points: irreversible loss in West Antarctica (including Thwaites Glacier) risks starting at 1.3°C warming, and East Antarctica destabilizes beyond 2°C, which poses a threat to India’s coastline and monsoon, stressing the need for action under the Indian Antarctic Act, 2022.

Arctic warming and the rising threat of invasive plant species

Rapid warming in the Arctic is weakening natural climatic barriers such as extreme cold, permafrost stability, and short growing seasons, making the region increasingly suitable for non-native plant species. At the same time, expanding human activities including shipping, tourism, research, and infrastructure are increasing the risk of accidental species introduction. Studies indicate that thousands of alien plants could potentially establish in the region, particularly in emerging hotspots such as Alaska, Greenland, Iceland, and Fennoscandia. These invasions threaten slow-growing tundra vegetation, alter soil nutrients and carbon cycles, and disrupt fragile Arctic food webs. Together, climate change and rising human access are transforming the Arctic from a naturally protected ecosystem into a high-risk frontier for biological invasions, highlighting the need for strong biosecurity, monitoring, and ecosystem-based management.

Western Disturbances and Climate Change: Impact on India

A recent Western Disturbance brought snowfall to the Himalayas and rain to northern plains, aiding Rabi crops and water security but causing warmer nights, poor air quality, and transport disruptions. The episode shows climate-linked weather variability, highlighting the need for better forecasting, air quality management, and climate-resilient planning.

NEARLY HALF OF THE GLOBAL POPULATION WILL FACE EXTREME HEAT BY 2050

An Oxford study warns that with 2°C warming, nearly half the world, especially India, will face extreme heat by 2050. Despite Heat Action Plans, ICAP, and judicial recognition of climate rights, weak implementation, urban heat stress, and cooling demands call for a stronger, integrated response.

Dugongs and Seagrass Ecosystems

The Union Environment Ministry’s Expert Appraisal Committee (EAC) has asked the Tamil Nadu government to revise the design of the proposed International Dugong Conservation Centre at Manora in Thanjavur district. Although the project aims to support dugong research, rescue, rehabilitation, and awareness, the committee raised concerns because most of the proposed construction falls within ecologically sensitive Coastal Regulation Zone (CRZ) areas, including a No Development Zone and regions with mangroves and seagrass meadows.

The EAC objected to the heavy use of conventional concrete structures in such a fragile coastal environment and recommended adopting low-impact, eco-friendly construction methods. It also suggested relocating as many facilities as possible outside the restricted zones and studying best practices from similar conservation centres. The project will be reconsidered only after a revised, environmentally sensitive plan is submitted.

HIMALAYAN CRYOSPHERE LOSS: MEANING, IMPACT, CHALLENGES and WAY FORWARD

The Himalayan cryosphere, Asia’s Third Pole, is melting rapidly due to global warming, threatening water security, increasing GLOFs, and disrupting food, energy, and stability. Despite initiatives like NMSHE, gaps remain. Strong monitoring, regional cooperation, resilient infrastructure, and deep emission cuts are essential.

Global Natural Disaster Trends Explained

The 2025 Munich Re report warns that lower disaster losses reflect chance, not reduced risk. Climate extremes are intensifying, protection gaps persist, and frequent smaller disasters dominate. Urgent focus is needed on risk reduction, insurance coverage, resilient infrastructure, and global climate cooperation.

Integrating grasslands into India’s national climate plans

The article argues that global and national climate policies remain overly focused on forests while neglecting grasslands, despite their critical role as stable carbon sinks, biodiversity reservoirs, and livelihood systems for indigenous and pastoral communities. It highlights how institutional silos between climate, biodiversity, and land-degradation frameworks have marginalised grasslands, using examples from Australia, Brazil’s Cerrado, and India. The piece calls for integrating grasslands into national climate plans and NDCs, recognising community land rights, and building coordination among UN bodies to ensure effective, science-based, and socially just climate action.

GLACIER DISAPPERANCE PROJECTED TO PEAK MID- CENTURY

Global glacier loss may peak during 2041–55, with up to 4,000 glaciers disappearing yearly. This threatens water security worldwide, especially in the Hindu Kush Himalaya. For India, higher GLOF risks and seasonal rivers loom. Limiting warming to 1.5°C remains crucial to save nearly half of global glaciers.

WINTER HEATWAVES IN USA EXPLAINED

Winter heatwaves, driven by jet-stream weakening, atmospheric blocking, and global warming, are emerging risks for India. They threaten rabi crops, ecosystems, and winter tourism. Despite steps under the National Action Plan on Climate Change, India needs stronger mitigation, better early warnings, and adaptive water and farm management to respond effectively.