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Climate sensitivity constrained by temperature reconstructions over the past seven centuries.

Author(s) : HEGERL G. C., CROWLEY T. J., HYDE W. T., et al.

Type of article: Article

Summary

The magnitude and impact of future global warming depends on the sensitivity of the climate system to changes in greenhouse gas concentrations. The commonly accepted range for the equilibrium global mean temperature change in response to a doubling of the atmospheric carbon dioxide concentration, termed climate sensitivity, is 1.5-4.5 K. A number of observational studies, however, find a substantial probability of significantly higher sensitivities, yielding upper limits on climate sensitivity of 7.7 K to above 9 K. In the article the authors demonstrate that such observational estimates of climate sensitivity can be tightened if reconstructions of Northern Hemisphere temperature over the past several centuries are considered.

Details

  • Original title: Climate sensitivity constrained by temperature reconstructions over the past seven centuries.
  • Record ID : 2006-3235
  • Languages: English
  • Subject: Environment, General information
  • Source: Nature - vol. 440 - n. 7087
  • Publication date: 2006/04/20

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