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

Temme, Franziska ORCID: https://orcid.org/0000-0002-4713-5493; Sommer, Christian ORCID: https://orcid.org/0000-0002-6641-0681; Schaefer, Marius ORCID: https://orcid.org/0000-0002-7508-8786; Jaña, Ricardo; Arigony-Neto, Jorge ORCID: https://orcid.org/0000-0003-4848-2064; Gonzalez, Inti; Izagirre, Eñaut ORCID: https://orcid.org/0000-0001-8502-7824; Giesecke, Ricardo; Tetzner, Dieter ORCID: https://orcid.org/0000-0001-7659-8799; Fürst, Johannes J. ORCID: https://orcid.org/0000-0003-3988-5849. 2025 Climate’s firm grip on glacier ablation in the Cordillera Darwin Icefield, Tierra del Fuego. Nature Communications, 16, 2677. 13, pp. 10.1038/s41467-025-57698-6

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Official URL: https://doi.org/10.1038/s41467-025-57698-6

Abstract/Summary

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.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1038/s41467-025-57698-6
ISSN:	2041-1723
Date made live:	21 Mar 2025 14:01 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/539134

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1038/s41467-025-57698-6

ISSN:

2041-1723

Date made live:

21 Mar 2025 14:01 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/539134