ISRO Study Links Dharali Flash Flood to Ice-Patch Collapse, Highlights Under-Recognized Cryo-Hydrological Hazard in Himalayas

Western Himalaya Warming 7.18°C by 2100, Snow Loss Triple Under High Emissions: Study

A new study reveals that the Western Himalaya is warming faster than the central and eastern parts, with winter temperatures projected to rise by over 7°C by 2100 under high emissions. This will lead to severe snow loss, threatening water security for 1.5 billion people dependent on glacier-fed rivers like the Indus, Ganges, and Brahmaputra.

Climate Change Study: 0.01°C/yr Temp Rise, 3.97mm/yr Rain Decline in Nilgiri Biosphere Reserve

A study reveals that climate change is disrupting the phenology of forests in the Nilgiri Biosphere Reserve, with a 0.01°C annual temperature rise and 3.97 mm annual rainfall decline from 1950 to 2018, leading to altered growing seasons and threatening endemic species. This data is critical for understanding climate impacts on biodiversity hotspots, a recurring theme in UPSC environment and geography questions.

ISRO's Oceansat-3 Captures Sharp Drop in Pacific Marine Productivity as El Niño Warms Ocean

ISRO's Oceansat-3 satellite has detected a sharp decline in chlorophyll-a in the equatorial Pacific Ocean during April-June 2026, linked to the developing El Niño. This reduction in marine productivity threatens the ocean food chain and serves as an early climate indicator ahead of a forecast strong El Niño event from September 2026 to February 2027.

NDMA Plans Comprehensive Study of Nepal Glacial Collapse; India Achieves 20% Ethanol Blending by 2025-26

A hanging glacier collapse in Nepal triggered a devastating flash flood, killing over 350, prompting NDMA to plan a comprehensive study to reduce GLOF risks in India. Simultaneously, India achieved 20% ethanol blending by 2025-26, five years ahead of schedule, but faces backlash from older vehicle owners; discussions on offering E10 alongside E20 are underway. The Kailash Mansarovar Yatra saw a surge in 2026 after resumption, and India-China special representatives reached an eight-point consensus on border management.

UK Met Office Forecasts Record El Nino >3°C; 2027 Likely Hottest Year on Record

The UK Met Office has forecast the strongest El Nino in over a century, with Pacific sea surface temperatures rising over 3°C above normal. This unprecedented event could make 2027 the hottest year globally, impacting global weather patterns including drier conditions in India and severe droughts in South America and the West Pacific.

2026 Monsoon Prediction Failure: El Niño Accuracy vs. Sub-seasonal Erratic Evolution Challenges

Climate models accurately predicted the 2026 El Niño and a deficient monsoon season, but failed to capture the erratic, sub-seasonal swings—like June’s 40% deficit followed by July’s recovery—which severely impacted farmers. This highlights a critical gap: while seasonal all-India rainfall totals can be forecast, long-lead predictions of spatial and temporal monsoon evolution remain unreliable, and AI-driven hybrid models are the most promising way forward.

Nepal Glacier Collapse (Magnitude 5.2) Triggers Deadly Flood, Highlights Himalayan Warming at 2.8°C

A massive glacier collapse in Nepal triggered a catastrophic flash flood, killing hundreds. This disaster underscores the accelerating impact of climate change on the Hindu Kush Himalaya, where glaciers are melting at double the rate since 2000. The event highlights cascading hazards (glacier collapse, debris flow, flash flood) and the urgent need for early warning systems — a key topic for GS1 Geography and GS3 Environment/Disaster Management.

Myristica Swamps in Western Ghats: 500-Million-Year-Old Ecosystem at Risk, Only 53 Patches Remain

Myristica swamps, ancient freshwater wetlands in the Western Ghats with 500 million years of genetic history, are down to just 53 patches in Kerala. They are vital for flood control, groundwater recharge, and biodiversity but face extinction from agriculture, logging, and past plywood exploitation. Urgent conservation is needed.