Introduction

• The Himalayas are crucial to India’s ecological and economic security as they feed the Indus, Ganga and Brahmaputra river systems.
• A recent report estimates that around 21.5% of India’s FY24 GDP is dependent on the Himalayas.

Economic and ecological concerns:

• Glacier retreat can initially increase meltwater, raising the risk of flash floods and GLOFs.
• In the long term, shrinking glaciers can reduce dry-season river flows, affecting agriculture, cities, industries and hydropower.
• Peak water refers to the point when glacier meltwater reaches its maximum, after which meltwater contribution declines due to loss of glacier mass.
• Himalayan river basins are expected to approach peak water around the middle of this century, creating future water-security challenges.
• Himalayan disasters can cause displacement, supply-chain disruptions, food insecurity and repeated economic losses.

Black carbon dimension

• Black carbon from incomplete combustion settles on snow and ice.
• It darkens the surface, increases absorption of solar radiation and accelerates snow and glacier melting.
• Modernising brick kilns can help reduce such emissions.

Way Forward

• Strengthen glacier monitoring and early-warning systems.
• Improve GLOF and disaster-risk management.
• Promote water-efficient and climate-resilient agriculture.
• Reduce black-carbon emissions through cleaner technologies.

Conclusion

Himalayan glacier conservation is therefore essential not only for environmental protection but also for India’s long-term water, food and economic security.