On World Water Day 2025, the spotlight was placed on glaciers as critical freshwater reservoirs under increasing pressure from climate change. As glaciers continue to retreat, impacts on water availability, ecosystems, and communities are becoming more evident worldwide.
This theme closely aligns with TerraDT’s work on land ice modelling to enrich the Destination Earth initiative. In fact, advanced modelling and digital twin components help improve our understanding of glacier dynamics and their role in the Earth system, thus supporting more informed decisions on climate adaptation and water resource management.
As World Water Day 2026 approaches, this is an opportunity to stress the urgency of protecting glaciers as key components of the global water cycle. Coordinated by UNESCO and World Meteorological Organization, the initiative highlights how glacier loss is accelerating due to rising global temperatures, with cascading effects on sea-level rise, water security, and natural hazards such as floods and droughts.
The 2025 focus also emphasises the need for improved monitoring, data sharing, and international cooperation to better understand glacier change and its downstream impacts. Strengthening scientific observation systems and integrating knowledge into policy and planning are key priority areas where digital twin technologies, such as those developed within TerraDT, can play a crucial role in supporting evidence-based climate resilience strategies.
UNESCO will celebrate the World Day for Glaciers and the World Water Day at its Headquarters in Paris on 18-19 March 2026, closing the International Year of Glaciers' Preservation 2025 and launching the new Decade of Action for Cryospheric Sciences.
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