Global warming, a hotly debated issue

Linked with Philip Stott – England.

Published on The Guardian, by Philip Stott, March 19, 2001.

I am no supporter of Mr Bush nor of “smokestack utilities” (Leader, March 16), but I am passionate about truth and honesty in science. In the last three months, a series of heavyweight scientific papers have appeared in journals such as Nature and Climate Research, showing incontrovertibly the “incomplete state of scientific knowledge” about climate change.

The critical focus has been on the role of water vapour, which is unquestionably the most important “greenhouse” gas, not carbon dioxide; the geological relationships between carbon dioxide and temperature; the many missing, or little-known variables, in the main climate models, including soot and “Pacific” vents; and the need to correct many temperature measurements, especially those over the oceans. One paper from the prestigious Harvard-Smithsonian center for astrophysics, concludes that: “Our review of the literature has shown that GCMs [climate models] are not sufficiently robust to provide an understanding of the potential effects of CO2 on climate necessary for public discussion” … (full text).

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