Himalayan Glaciers Melting Faster as India's Economy Faces Risks

The Himalayas are approaching a dangerous threshold as glaciers melt faster, glacial lakes grow more unstable, and the mountains face a widening monitoring gap, according to new research conducted by global consultancy Systemiq alongside the Integrated Mountain Initiative, with technical inputs from ICIMOD and the GB Pant National Institute of Himalayan Environment.

The findings follow devastating floods in Nepal and Tibet that killed more than 1,300 people and caused widespread destruction, highlighting escalating risks from a rapidly changing Himalayan environment. Himalayan glaciers are currently losing mass 65% faster than they did a decade ago.

Yet, only about 21 of the estimated 40,000 glaciers across the Himalaya-Karakoram region are monitored in detail on a sustained basis. This monitoring gap matters because the physical landscape changes rapidly, leaving expanding lakes held back by unstable rock and ice deposits as glaciers retreat.

Stock photo for illustration only, not from the actual event

India already bears evidence of this risk scale. While 18% of Indian land is Himalayan, the region accounts for roughly 35% of disasters. The mountains have witnessed destructive glacial lake outburst floods, such as the 2023 disaster in Sikkim killing at least 70 people and a 2021 flood in Uttarakhand killing over 200 people.

The danger extends beyond spectacular floods as the Himalayas feed major rivers sustaining hundreds of millions across South Asia. ICIMOD notes that peak water is expected around mid-century in most Hindu Kush Himalayan river basins before runoff declines as glacier mass diminishes.

The research estimates that Himalayan water underpins roughly 20% of India's GDP, sustaining wheat, rice, tea, hydropower, and pilgrimage economies, while mountain states capture only 5% of that value.

"Glaciers are retreating, permafrost and high-mountain slopes are becoming increasingly unstable, and communities and infrastructure downstream face growing risks from complex and cascading hazards"

Pema Gyamtsho

Not all driving forces are beyond regional control. Systemiq estimates that roughly a third of Himalayan glacier melt is driven by black carbon from brick kilns in the plains. The report outlines 10 priority transitions, ranging from lowering black-carbon emissions and expanding monitoring to enhancing disaster early-warning systems and rethinking mountain tourism.

Source: BBC Science & Environment