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Climatic Change: Are We on the Brink of a Pronounced Global Warming?
Wallace S. Broecker
New Series, Vol. 189, No. 4201 (Aug. 8, 1975), pp. 460-463
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1740491
Page Count: 4
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If man-made dust is unimportant as a major cause of climatic change, then a strong case can be made that the present cooling trend will, within a decade or so, give way to a pronounced warming induced by carbon dioxide. By analogy with similar events in the past, the natural climatic cooling which, since 1940, has more than compensated for the carbon dioxide effect, will soon bottom out. Once this happens, the exponential rise in the atmospheric carbon dioxide content will tend to become a significant factor and by early in the next century will have driven the mean planetary temperature beyond the limits experienced during the last 1000 years.
Science © 1975 American Association for the Advancement of Science