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Role of orbitally induced changes in tundra area in the onset of glaciation.

Author(s) : GALLIMORE R. G., KUTZBACH J. E.

Type of article: Article

Summary

The authors show, using a global climate model, that the increase in surface albedo (under snow-covered conditions) that results from a biome model estimate of tundra expansion 115,000 years ago is sufficient to induce glaciation over extreme-northeastern Canada. If the additional cooling from this estimated tundra expansion induces further expansion, then widespread glaciation occurs at latitudes above 65 deg N. These results suggest that the climate feedback from high-latitude tundra expansion might have contributed to the onset of the most recent glaciation.

Details

  • Original title: Role of orbitally induced changes in tundra area in the onset of glaciation.
  • Record ID : 1997-0567
  • Languages: English
  • Subject: Environment, General information
  • Source: Nature - vol. 381 - n. 6582
  • Publication date: 1996/06/06
  • Document available for consultation in the library of the IIR headquarters only.

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