Hindu Kush Himalaya region to face drier monsoon, climate-induced hazards remain: New analysis

📌 Summary:

• HKH Monsoon Outlook 2026 (by ICIMOD with Institute of Atmospheric Physics, Chinese Academy of Sciences) predicts below-normal rainfall and above-normal temperatures this monsoon
• Hindu Kush Himalaya is a 3,500-km mountain arc across Afghanistan, Pakistan, Nepal, India, China, Bangladesh, Myanmar, Bhutan; source of 10+ major river basins (Ganga, Indus, Brahmaputra, Yangtze, Mekong, Amu Darya) supporting ~2 billion people
• Key driver: anticipated return of El Niño — unusually warm central/eastern tropical Pacific that suppresses the South Asian monsoon (which gives 70–80% of the region's annual rainfall)
• Compounding factors: below-average winter snow persistence → smaller seasonal water buffer; Northern Hemisphere snow cover below normal (Jan–Mar 2026, inversely linked to monsoon strength)
• Counter-factor: a possible positive Indian Ocean Dipole later in season could partly offset drying (uncertain); IMD has already forecast below-par monsoon
• Paradox highlighted: a drier overall monsoon does NOT mean lower risk — short, intense rainfall events can still trigger floods, glacial lake outburst floods (GLOFs) and landslides; rising temperatures accelerate glacier/snow melt
• Multiple agencies (SASCOF-34, APEC Climate Centre, Copernicus, IRI) project Pacific shift from neutral to El Niño in early monsoon, persisting through season

🎯 UPSC Relevance: GS1 Geography (monsoon mechanism, El Niño/IOD, cryosphere) and GS3 Disaster Management/Environment (water security, GLOF and landslide risk in the Himalayas).

📝 Prelims Facts:

• ICIMOD = International Centre for Integrated Mountain Development (Kathmandu-based)
• El Niño suppresses Indian monsoon; positive IOD tends to enhance it
• HKH spans 8 countries; "Third Pole" — largest ice mass outside the poles
• South Asian monsoon = 70–80% of HKH annual rainfall

🔑 Key Term: GLOF (Glacial Lake Outburst Flood) — sudden release of water from a glacial lake, a growing Himalayan hazard amplified by warming-driven glacier melt.