Ice core evidence for significant 100-year regional warming on the Antarctic Peninsula
Article first published online: 24 OCT 2009
Copyright 2009 by the American Geophysical Union.
Geophysical Research Letters
Volume 36, Issue 20, October 2009
How to Cite
2009), Ice core evidence for significant 100-year regional warming on the Antarctic Peninsula, Geophys. Res. Lett., 36, L20704, doi:10.1029/2009GL040104., , , and (
- Issue published online: 24 OCT 2009
- Article first published online: 24 OCT 2009
- Manuscript Accepted: 23 SEP 2009
- Manuscript Revised: 4 SEP 2009
- Manuscript Received: 16 JUL 2009
- ice cores;
- Antarctic Peninsula;
- climate change
 We present a new 150-year, high-resolution, stable isotope record (δ18O) 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.