Posts at Knowledge Problem acknowledge the range of results from Part I and Part II in my series; Katzenstein and Apt; and an article by Michael Milligan et al, Wind Power Myths Debunked, but attribute much of the differences to characteristics of the power system to which wind power is added.
However, although results will vary by jurisdiction, the differences I reported are not derived from this consideration but from general issues with respect to wind power integration. Milligan claims low reductions from the theoretical maximum (negligible to 7 per cent), apparently from Gross et al’s literature review, but this does not survive critical assessment.
The work of Katzenstein and Apt is cited in the bibliography to Part I, even though they show that as much as 75–80 per cent of the CO2 emissions reductions presently assumed by policy makers is realized.…
Continue ReadingFor some peak oil advocates who are nervous about the idea of a post-apocalyptic vision of society, it has become popular to argue for a peak and plateau rather than a peak and decline of 3–5% per year, as some of the original work postulates. This seems more palatable than calling for a global upheaval, Hollywood notwithstanding.
The original peak and decline scenario was based on the bell curve popularized by M. King Hubbert. A number have disputed the shape of the curve, arguing for a Gaussian curve instead, for example. But they are avoiding the basic question of causality. The appearance of a bell curve appears to be more coincidence than anything else, since it is not often replicated in reality. The 1998 Scientific American article, “The End of Cheap Oil,” by Colin Campbell and Jean Laherrere, contained the laughable figure of several stylized oil fields’ production curves surmounted by a bell curve and the assertion that the one aggregated to the other.…
Continue ReadingBut even if the IPCC’s iconic statement were correct, it still would not be cause for alarm….The potential (and only the potential) for alarm enters with the issue of climate sensitivity—which refers to the change that a doubling of CO2 will produce in [global mean temperatures]. –Richard Lindzen, Wall Street Journal, November 30, 2009
Defenders of the IPCC position on climate science have adopted different strategies in dealing with the scandal of the CRU emails and computer code. Some authoritative voices, notably Judy Curry, have engaged in dialog with skeptics and have reassured PhD students that the “tribalism” revealed in the CRU emails has no place in science.
On the other hand, another very common reaction has been to mock the “deniers” for taking certain phrases out of context.…
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