Uncertainty in climate-sensitivity estimates (Reply)

Gabriele C. Hegerl, Thomas J. Crowley, William T. Hyde and David J. Frame
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Gabriele C. Hegerl: Nicholas School of the Environment and Earth Sciences, Duke University, Durham, North Carolina 27708, USA hegerl@duke.edu
Thomas J. Crowley: Present address: Department of Physics, University of Toronto, Toronto M5S 1A7, Canada
William T. Hyde: Present address: Department of Physics, University of Toronto, Toronto M5S 1A7, Canada
David J. Frame: Climate Dynamics Group, University of Oxford

Nature, 2007, vol. 446, issue 7131, E2-E2

Abstract: Abstract Despite Schneider's claim1, the method we use to estimate equilibrium climate sensitivity from multiple proxy-based reconstructions of the temperature in the Northern Hemisphere2 does account for uncertainty in reconstructions, including that associated with non-temperature and sampling error in the reconstruction. We arrive at a tighter constraint on climate sensitivity not by neglecting uncertainties, but by combining our wide-tailed proxy-based estimate with an independent estimate of climate sensitivity based on twentieth-century warming.

Date: 2007
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DOI: 10.1038/nature05708

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