The Antarctic Peninsula is currently one of the fastest-warming locations on Earth, but its long-term variability has remained unclear. This study uses TEX86 sea surface temperature proxy evidence to show that a long-term cooling of about 3–4 °C occurred in waters near the tip of the Antarctic Peninsula over the past 12,000 years, consistent with orbitally controlled changes in insolation. Shorter-term variability in temperature at the Antarctic Peninsula appears to have been strongly influenced by the position of westerly winds. The present influence of the El Niño/Southern Oscillation system on the Antarctic Peninsula may have arisen only during the late Holocene.
- A. E. Shevenell
- A. E. Ingalls
- C. Kelly