Legrain, Etienne, Tollenaar, Veronica, Goderis, Steven, Ardoin, Lisa, Blard, Pierre‐Henri, Claeys, Philippe, Cordero, Raúl R., Debaille, Vinciane, Fripiat, François, Huybrechts, Philippe, and others. (2025) Absence of elevation‐dependent warming in Antarctica inferred from blue ice paleoclimate records. Geophysical Research Letters, 52 (9). ISSN 1944-8007. (doi:10.1029/2024gl113165) (KAR id:109878)
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Language: English 
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| Official URL: https://doi.org/10.1029/2024gl113165 |
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Abstract
Reconstructing the past Antarctic climate commonly involves deep drilling of ice cores. However, the ∼1% of the Antarctic ice sheet surface covered with blue ice also provides unique, yet largely unexploited paleoclimatic opportunities. Here, we analyze 444 ice samples collected in blue ice surfaces located around the Sør Rondane Mountains. Isotope measurements (δ18O) on these samples enable us to estimate surface paleotemperatures for both the current interglacial period and the Last Glacial Maximum. Combining these paleotemperatures with the spatially varying source elevation of the sampled blue ice provides new insights on the (lack of) lapse rate evolution (i.e., changes in the elevation‐temperature relationship) outside the 40°N–40°S latitudinal band. This result contrasts with low‐latitude areas that have experienced elevation‐dependent warming (EDW) during this period. Our results hint at a future (lack of) EDW in Antarctica, thereby highlighting the potential of blue ice area paleoclimatic archives to better predict future climatic changes.
| Item Type: | Article |
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| DOI/Identification number: | 10.1029/2024gl113165 |
| Uncontrolled keywords: | ice isotopes, elevation‐dependant warming, Antarctica, blue ice, last glacial maximum, lapse rate |
| Subjects: |
G Geography. Anthropology. Recreation Q Science Q Science > QE Geology |
| Institutional Unit: | Schools > School of Engineering, Mathematics and Physics |
| Former Institutional Unit: |
There are no former institutional units.
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| Funders: |
Conseil européen de la recherche (https://ror.org/0472cxd90)
Belgian Federal Science Policy Office (https://ror.org/01fapfv42) |
| SWORD Depositor: | JISC Publications Router |
| Depositing User: | JISC Publications Router |
| Date Deposited: | 28 May 2025 11:50 UTC |
| Last Modified: | 22 Jul 2025 09:23 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/109878 (The current URI for this page, for reference purposes) |
University of Kent Author Information
van Ginneken, Matthias.
| Creator's ORCID: |
 https://orcid.org/0000-0002-2508-7021
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