February 28, 2007
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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 4, NUMBER 4, APRIL 1991
In a letter to President Bush representing a
group of about 30 environmental scientists, Patrick Michaels (Univ. Virginia)
and Robert Balling (Ariz. State Univ.) have urged support for climatic change
research which takes a different direction from what they call the "popular
vision." They believe any impacts of change are likely to be much less
detrimental than generally expected, and perhaps neutral or even beneficial.
Three lines of evidence support this view: (1) the magnitude of temperature
change observed to date suggests warming from doubled CO2 less than the commonly
accepted value of about 4° C; (2) refined climate models project most
warming into high latitude winter implying warmer nights, which would lengthen
growing seasons; (3) increased CO2 enhances plant growth and water use
efficiency. The group, which includes Richard Lindzen, Sherwood Idso and
Reginald Newell, have assembled research proposals based on this view. (See
Reports/General, this Global Climate Change Digest issue--Apr. 1991.)
See also "Greenhouse Skeptics Make Their Move," Global Environ.
Change Rep., pp. 1-3, Mar. 1, 1991. In "Global Warming: Look Before We
Leap" (New Scientist, p. 10, Mar. 9) another dissenter, William
Nierenberg, rebuts statements made by J. Gribbin in a previous article
concerning Nierenberg's view of the IPCC assessment.
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