Context:
Recently, Two reports, Overshoot and the Cryosphere: Averting Global Meltdown and State of the Cryosphere 2026: The Cost of Overshoot, released on 2 November 2026 by the International Cryosphere Climate Initiative (ICCI) and the United Nations Environment Programme (UNEP), warned that the world's frozen regions are warming faster than the global average, increasing the risks of glacial floods, irreversible ice loss and massive carbon emissions.
What is the Cryosphere?
The cryosphere refers to all parts of the Earth where water exists in frozen form, including glaciers, ice sheets, sea ice, permafrost, snow cover and ice shelves. It plays an important role in regulating global temperature through the albedo effect, maintaining freshwater reserves and influencing ocean circulation.
Major Findings of the Reports:
The reports highlighted that the Arctic has warmed up to four times faster than the global average over the past decade. In the Hindu Kush Himalaya, global warming of 1.5°C could translate into regional warming of 1.8–2.2°C. Greenland and Antarctic ice sheets are losing ice at approximately six times the rate recorded in the 1990s. Furthermore, the reports warned that temporarily exceeding the 1.5°C Paris Agreement threshold could trigger irreversible damage to glaciers, ice sheets and permafrost.
Permafrost and Its Climate Implications:
Permafrost refers to ground that remains frozen for at least two consecutive years. Approximately 14 million sq km of the Northern Hemisphere is underlain by terrestrial permafrost, storing at least 1,700 billion tonnes of carbon. Its melting releases carbon dioxide and methane into the atmosphere, creating a positive feedback loop that accelerates global warming.
What is Glacial Lake Outburst Floods (GLOFs)?
GLOF refers to the sudden release of water from a glacial lake due to the failure of its natural dam, which may consist of ice or accumulated rock debris. Major triggers include ice avalanches, intense rainfall, landslides and moraine dam failures. According to the study, ice avalanches accounted for 50% of recorded events, while intense rainfall contributed 25%. Around 70% of GLOFs occurred during the summer monsoon.
India's Vulnerability:
A UN-led study covering eight Hindu Kush Himalayan countries found that India recorded 6,119 deaths from GLOFs between 1835 and 2025, the highest among the countries studied. India recorded 62 GLOF events, compared with 199 in China and 152 in Pakistan. GLOF frequency increased to approximately 34 events per decade after 1950, nearly five times the pre-1950 rate. The 2021 Chamoli disaster and 2023 South Lhonak Lake disaster highlight India's vulnerability.
Major Implications:
Cryosphere degradation threatens freshwater security, biodiversity, hydropower infrastructure, agriculture and mountain livelihoods. It also contributes to sea-level rise, displacement of vulnerable communities and increased disaster risks in downstream regions.
Government Initiatives:
Important initiatives include the Paris Agreement (2015), National Action Plan on Climate Change, National Mission for Sustaining the Himalayan Ecosystem, NDMA guidelines on GLOF management and the UN's Early Warnings for All initiative.
Conclusion:
The rapid degradation of the cryosphere is no longer merely a polar or Himalayan concern but a global climate security challenge. India must integrate climate mitigation, scientific research and disaster preparedness to protect its fragile Himalayan ecosystem and ensure sustainable development.
