Climate Sensitivity to Increasing Greenhouse Gases

  title={Climate Sensitivity to Increasing Greenhouse Gases},
  author={James E. Hansen and Andrew A. Lacis and David Rind and Gary L. Russell},
  • James E. Hansen, Andrew A. Lacis, +1 author Gary L. Russell
  • Published 1999
  • Environmental Science
  • Climate changes occur on all time scales, as illustrated in Figure 2-1 by the trend of global mean surface air temperature in the past century, the past millennium, and the past 30,000 years. The range of global mean temperature in the past 30,000 years and indeed the past million years has been of the order of 5C. At the peak of the last glacial period, the Wisconsin ice age approximately 18,000 years ago, the mean temperature was 3-5C (5-9F) cooler than today. At the peak of the current… CONTINUE READING

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