Return of Malthus; Lindzen Meets the Mayors
October 20, 2003
Source
Cooler Heads Coalition
Return of Malthus
In an inversion of the way Malthusian arguments usually run, a team of Swedish geologists has said that constraints on fossil fuel resources mean that there is not enough oil and gas available to fuel the doomsday scenarios of greenhouse gas production envisaged by the United Nations' Intergovernmental Panel on Climate Change.
Geologists Anders Sivertsson, Kjell Aleklett and Colin Campbell of Uppsala University say there is not enough oil and gas left for even the most conservative of the 40 IPCC scenarios to come to pass. Their research suggests that the combined reserves of oil and gas amount to barely 3500 billion barrels of oil, which is considerably below the 5000 billion barrels assumed by the "best-case" IPCC scenario. The "worst-case" assumes 18,000 billion barrels, a level Aleklett calls "completely unrealistic."
Nebojsa Nakicenovic of the IPCC team counters that their scenarios included a much broader and more internationally accepted range of estimates than the "conservative" Swedes put forward and told New Scientist (Oct. 3) that coal could be used to make up the difference. Aleklett conceded that coal could fill the gap, and both agreed that its use in such an eventuality would be "disastrous."
Lindzen Meets the Mayors
In response to steps taken by the Mayors of Newton and Worcester, Mass., to mitigate the effects of climate change on their townships, Richard S. Lindzen, Alfred P. Sloan Professor of Meteorology at the Massachusetts Institute of Technology, published an open letter in The Washington Times on October 9.
He concluded, "Capping CO2 emissions per unit electricity generated will have a negligible impact at best on CO2 levels. It certainly will, however, increase the cost of electricity, and place those states pursuing such a path at a distinct competitive disadvantage. Why would any elected official want that, even at the admittedly severe risk of appearing politically incorrect?
"It is important to understand that the impact of CO2 on the Earth's heat budget is nonlinear. What this means is that although CO2 has only increased about 30 percent over its pre-industrial level, the impact on the heat budget of the Earth due to the increases in CO2 and other man-influenced greenhouse substances has already reached about 75 percent of what one expects from a doubling of CO2. "Assuming that all of the very irregular change in temperature over the past 120 years or so-about 1 degree F-is due to added greenhouse gases-a very implausible assumption-the temperature rise seen so far is much less (by a factor of 2-to-3) than models predict.
"If we are, nonetheless, to believe the model predictions, the argument goes roughly as follows: The models are correct, but some unknown process has canceled the impact of increasing greenhouse gases, and that process will henceforth cease. Do we really want to put the welfare of the nation, much less any one community, at risk for such an argument? I for one would hope for greater prudence from my elected officials."
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