Ice core evidence for significant 100-year regional warming on the Antarctic Peninsula

Thomas, E. R., Dennis, P. F. ORCID:, Bracegirdle, T. J. and Franzke, C. (2009) Ice core evidence for significant 100-year regional warming on the Antarctic Peninsula. Geophysical Research Letters, 36 (20). ISSN 1944-8007

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We present a new 150-year, high-resolution, stable isotope record (d18O) from the Gomez ice core, drilled on the data sparse south western Antarctic Peninsula, revealing a ~2.7°C rise in surface temperatures since the 1950s. The record is highly correlated with satellite-derived temperature reconstructions and instrumental records from Faraday station on the north west coast, thus making it a robust proxy for local and regional temperatures since the 1850s. We conclude that the exceptional 50-year warming, previously only observed in the northern Peninsula, is not just a local phenomena but part of a statistically significant 100-year regional warming trend that began around 1900. A suite of coupled climate models are employed to demonstrate that the 50 and 100 year temperature trends are outside of the expected range of variability from pre-industrial control runs, indicating that the warming is likely the result of external climate forcing.

Item Type: Article
Uncontrolled Keywords: sdg 13 - climate action ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Geosciences
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017)
Depositing User: Rosie Cullington
Date Deposited: 23 Feb 2011 11:53
Last Modified: 20 Mar 2024 11:31
DOI: 10.1029/2009GL040104

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