Geophysical Research Letters
Rights and Access Note
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).
We present a reconstruction of Antarctic mean surface temperatures over the past two centuries based on water stable isotope records from high-resolution, precisely dated ice cores. Both instrumental and reconstructed temperatures indicate large interannual to decadal scale variability, with the dominant pattern being anti-phase anomalies between the main Antarctic continent and the Antarctic Peninsula region. Comparative analysis of the instrumental Southern Hemisphere (SH) mean temperature record and the reconstruction suggests that at longer timescales, temperatures over the Antarctic continent vary in phase with the SH mean. Our reconstruction suggests that Antarctic temperatures have increased by about 0.2 degrees C since the late nineteenth century. The variability and the long-term trends are strongly modulated by the SH Annular Mode in the atmospheric circulation.
Schneider, David P.; Steig, Eric J.; van Ommen, Tas D.; Dixon, Daniel A.; Mayewski, Paul Andrew; Jones, Julie M.; and Bitz, Cecilia M., "Antarctic Temperatures Over the Past Two Centuries from Ice Cores" (2006). Earth Science Faculty Scholarship. 11.
Schneider, DP, Steig, EJ, Van Ommen, TD, Dixon, DA, Mayewski, PA, Jones, JM, and Bitz, CM, 2006, Antarctic Temperatures Over the Past Two Centuries from Ice Cores: Geophysical Research Letters, v. 33, L16707. To view the published open abstract, go to http://dx.doi.org and enter the DOI.
© Copyright 2006 American Geophysical Union
publisher's version of the published document