Global Glacier Extinction Explorer

Interactive map

Global Glacier Extinction Explorer

Controls

Basemap

Glacier overlay

Navigate the map to discover glaciers worldwide. Select a warming scenario to see how projected extinction years shift under different futures. Hover over a glacier for a quick summary, or click it to explore its full profile — including area, elevation range, and projected extinction timing across scenarios. Use the 3D button to tilt into a terrain view.

Extinction year

Tiles © Esri, Maxar, Earthstar Geographics, and the GIS User Community | Labels: CARTO, © OpenStreetMap contributors | Glacier data: Van Tricht et al. (2026)

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Click the 3D button to tilt the map and explore the landscape.

About this map

Glacier changes are traditionally quantified in terms of total (regional) mass and area loss, but such metrics do not fully capture the disappearance of individual glaciers. Yet every glacier, no matter how small, can matter. Beyond their contribution to sea-level rise or regional water resources, glaciers hold important cultural, ecological, and societal value, often deeply rooted in local landscapes and communities. In the context of the UN International Year of Glacier Preservation (2025), this study therefore shifts the focus towards the fate of individual glaciers worldwide.

To assess glacier extinction, two complementary criteria are used. A glacier is considered disappeared (extinct) when its area drops below 0.01 km², consistent with commonly used inventory thresholds, or when its remaining volume falls below 1% of its initial value, indicating that only a negligible ice body persists. To derive volume and area trajectories for each glacier, three global glacier models (GloGEM, OGGM, PyGEM) are used, combined with multiple General Circulation Models and emission scenarios corresponding to projected temperature increases of +1.5°C, +2.0°C, +2.7°C, and +4.0°C. All trajectories are then combined to determine median extinction years, as well as Q25 and Q75 ranges (i.e. the 25% and 75% probability intervals). These results are shown on the map. The modelling runs through 2100 CE, so a glacier described as surviving under a scenario has not crossed either extinction threshold by 2100; this should not be interpreted as indefinite survival, as glacier retreat could continue for centuries beyond 2100 under the considered warming levels.

Extinction is defined relative to the initial glacier outlines from the Randolph Glacier Inventory (RGI v6.0). Glacier fragmentation during retreat is not accounted for; all remaining ice within the original glacier extent is treated as part of the same glacier.

Data sources

• Extinction projections: Van Tricht, L., Zekollari, H., Huss, M. et al. Peak glacier extinction in the mid-twenty-first century. Nature Climate Change 16, 143–147 (2026). doi:10.1038/s41558-025-02513-9
• Regional and glacier-specific results (including those shown here) are publicly available on Zenodo: doi:10.5281/zenodo.17371641
• Glacier outlines: RGI Consortium (2017). Randolph Glacier Inventory — A Dataset of Global Glacier Outlines, Version 6. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi:10.7265/4m1f-gd79
• Ice volume: Farinotti, D., Huss, M., Fürst, J. J., Landmann, J., Machguth, H., Maussion, F., and Pandit, A.: A consensus estimate for the ice thickness distribution of all glaciers on Earth. Nat. Geosci., 12, 168–173, doi:10.1038/s41561-019-0300-3 , 2019.

Acknowledgements

The data processing, data pipeline, and interactive web application for presenting these scientific results were developed by Kristof Van Tricht (VITO). Claude Sonnet 4.6 and GPT-6 Astra were used as coding tools to support the frontend implementation and data pipeline structuring.

This application is built on open-source software: MapLibre GL JS (map rendering), PMTiles (vector tile streaming), GeoPandas and NumPy (data processing), GDAL / ogr2ogr (tile generation), and go-pmtiles (tile packaging).

Feedback

If you notice incorrect data or have suggestions for improved naming, please send them to lander.van.tricht@vub.be.