Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year

Eric J. Steig (), David P. Schneider, Scott D. Rutherford, Michael E. Mann, Josefino C. Comiso and Drew T. Shindell
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Eric J. Steig: University of Washington, Seattle, Washington 98195, USA
David P. Schneider: National Center for Atmospheric Research, Boulder, Colorado 80307, USA
Scott D. Rutherford: Roger Williams University, Bristol, Rhode Island, USA
Michael E. Mann: and Earth and Environmental Systems Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
Josefino C. Comiso: NASA Laboratory for Hydrospheric and Biospheric Sciences, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
Drew T. Shindell: NASA Goddard Institute for Space Studies and Center for Climate Systems Research, Columbia University, New York, New York 10025, USA

Nature, 2009, vol. 457, issue 7228, 459-462

Abstract: Antarctic warming: climate reconstruction gets to the heart of the continent The Antarctic Peninsula is one of the most rapidly warming locations on Earth, but it has been difficult to establish whether continent-wide changes are comparable to the clear upward trend in global average temperature. This is because most of the continuous records from ice-sheet weather stations are coastal, providing little information on the continental interior. This problem is by-passed in a new reconstruction of Antarctic surface temperature trends for 1957–2006, based on satellite data (with good spatial coverage for a short period) and air temperatures from weather stations (for a long timescale), blended via an algorithm that estimates missing data points in climate fields. The resulting record, more reliable than previous gap-filling exercises, suggests that overall the continent is warming by about 0.1 °C per decade, with stronger warming in winter and spring and over West Antarctica.

Date: 2009
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DOI: 10.1038/nature07669

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