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Science 14 November 2008:
Vol. 322. no. 5904, pp. 1061 - 1062
DOI: 10.1126/science.1166366
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Perspectives

CLIMATE CHANGE:
Understanding Glacier Flow in Changing Times

Richard B. Alley,1 Mark Fahnestock,2 Ian Joughin3

Subannual lurches of the Greenland and Antarctic ice sheets may reduce uncertainties about climate change effects on sea-level rise.

1Department of Geosciences and Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA 16802, USA. E-mail rba6{at}psu.edu

2Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USA.

3Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle, WA 98105-6698, USA.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)