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Saturday, October 12, 2013

New peer reviewed study on West Antarctica published in Geophysical Research Letters Oct. 2013 finds more dramatic warming in 18th and 19th centuries than today, present climate in line with natural variability over past 300+ yrs.

10/2/2013, "A 308-year record of climate variability in West Antarctica†," Geophysical Research Letters, Elizabeth R Thomas1,*, Thomas J Bracegirdle1, John Turner1, Eric W Wolff2 DOI: 10.1002/2013GL057782

"†This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/2013GL057782"


[1] We present a new stable isotope record from Ellsworth Land which provides a valuable 308-year record (1702-2009) of climate variability from coastal West Antarctica. Climate variability at this site is strongly forced by sea surface temperatures (SSTs) and atmospheric pressure in the tropical Pacific and related to local sea ice conditions. The record shows that this region has warmed since the late 1950s, at a similar magnitude to that observed in the Antarctic Peninsula and central West Antarctica, however, this warming trend is not unique. More dramatic isotopic warming (and cooling) trends occurred in the mid-19th and 18th centuries, suggesting that at present the effect of anthropogenic climate drivers at this location has not exceeded the natural range of climate variability in the context of the past ~300 years."...

"Author Information
  1. 1British Antarctic Survey, Cambridge, UK
  2. 2Department of Earth Sciences, University of Cambridge, Cambridge, UK
*Corresponding author: E. R. Thomas, British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB4 0ET, UK." via Climate Depot


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