Articles | Volume 19, issue 9
https://doi.org/10.5194/tc-19-3459-2025
https://doi.org/10.5194/tc-19-3459-2025
Research article
 | 
03 Sep 2025
Research article |  | 03 Sep 2025

Modelling the evolution of permafrost temperatures and active layer thickness in King George Island, Antarctica, since 1950

Joana Pedro Baptista, Gonçalo Brito Guapo Teles Vieira, António Manuel de Carvalho Soares Correia, Hyoungseok Lee, and Sebastian Westermann

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Cited articles

Baptista, J.: Parameters files, forcing data and observatory data used in “Modelling the evolution of permafrost temperatures and active layer thickness in King George Island, Antarctica, since 1950”, Zenodo [data set], https://doi.org/10.5281/zenodo.16949851, 2025. 
Baptista, J., Vieira, G., and Lee, H.: Ground surface temperature regimes are controlled by the topography and snow cover in the ice-free areas of Maritime Antarctica, Catena (Amst), 240, 107947, https://doi.org/10.1016/j.catena.2024.107947, 2024. 
Bevan, S., Luckman, A., Hendon, H., and Wang, G.: The 2020 Larsen C Ice Shelf surface melt is a 40-year record high, The Cryosphere, 14, 3551–3564, https://doi.org/10.5194/tc-14-3551-2020, 2020. 
Birkenmajer, K.: A guide to Tertiary geochronology of King George Island, West Antarctica, Pol. Polar Res., 10, 555–579, 1989. 
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Short summary
Permafrost underlies ice-free areas of Antarctica, but its response to long-term warming is unclear due to a limited number of monitoring sites. To address this, we used the CryoGrid model, forced with climate data, to estimate permafrost temperatures and active layer thickness at King Sejong Station since 1950. The results show ground temperatures rising 0.25 °C per decade and the active layer thickening by 2 m. Warming has accelerated since 2015, highlighting the need for continued monitoring.
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