A 400 years isotope record of the Antarctic Peninsula climate
Article first published online: 7 DEC 2012
Copyright 1990 by the American Geophysical Union.
Geophysical Research Letters
Volume 17, Issue 13, pages 2369–2372, December 1990
How to Cite
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 30 JUL 1990
- Manuscript Received: 16 MAY 1990
A 400 year deuterium record has been obtained from a 154.3 m ice core drilled on Dalinger Dome (James Ross Island, Antarctic Peninsula). Based on a comparison between the isotope profile and the temperature data over the recent period (Aristarain et al, 1986), an interpretation is proposed in terms of temperature changes. The “warmest part” of this proxy record occurs around 1850 with, as a salient feature, a temperature decline of ∼ 2°C from that time up until present conditions. This feature, at odds with the long timescale warming trend recorded for both hemispheres over the same period, likely reflects a regional characteristic related to the lack of a high latitude/low latitude link in Southern hemisphere circulation patterns.