Climate’s firm grip on glacier ablation in the Cordillera Darwin Icefield, Tierra del Fuego

Temme F, Sommer C, Schaefer M, Jaña R, Arigony-Neto J, Gonzalez I, Izagirre E, Giesecke R, Tetzner D, Fürst J (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Book Volume: 16

Article Number: 2677

Journal Issue: 1

DOI: 10.1038/s41467-025-57698-6

Abstract

The Cordillera Darwin Icefield (CDI) in Tierra del Fuego is one of the largest temperate ice bodies in the Southern Hemisphere. We simulate the climatic energy and mass balance of its glaciers (2000–2023), which are sensitive indicators of climatic changes in the Southern Hemisphere’s higher mid-latitudes. Year-round westerly winds cause strong climatic gradients across the mountain range, reflected in the energy and mass fluxes. Our results reveal a significant increase in surface melt (+0.18 m w.e. yr^-1 per decade) over the past two decades. We also present the first estimate of dynamically controlled mass loss into adjacent fjords and lakes by frontal ablation, amounting to 1.44 ± 0.94 Gt yr^-1 (26 % of the total CDI mass loss). Frontal losses are mainly channelized through few marine-terminating glaciers. While frontal ablation is important for predicting the fate of individual glaciers, for the CDI as a whole, atmospheric conditions exert the main control on the current glacier evolution.

Authors with CRIS profile

Involved external institutions

Universidad Austral de Chile Chile (CL) Instituto Antártico Chileno Chile (CL) Universidade Federal do Rio Grande - FURG Brazil (BR) Centro de Estudios Cuaternarios de Fuego Patagonia y Antártica (CEQUA) Chile (CL) University of Basque Country / Universidad del Pais Vasco (UPV) / Euskal Herriko Unibersitatea (EHU) Spain (ES) British Antarctic Survey United Kingdom (GB)

How to cite

APA:

Temme, F., Sommer, C., Schaefer, M., Jaña, R., Arigony-Neto, J., Gonzalez, I.,... Fürst, J. (2025). Climate’s firm grip on glacier ablation in the Cordillera Darwin Icefield, Tierra del Fuego. Nature Communications, 16(1). https://doi.org/10.1038/s41467-025-57698-6

MLA:

Temme, Franziska, et al. "Climate’s firm grip on glacier ablation in the Cordillera Darwin Icefield, Tierra del Fuego." Nature Communications 16.1 (2025).

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