Prof. Roger Pielke Jr. on EPA climate regs: ‘Won’t influence future extreme weather or its impacts in any detectable way’ – ‘The so-called climate benefits of the regulations are essentially nil’
Pielke Jr. : 'The so-called climate benefits of the regulations are thus essentially nil, though I suppose one could gin some up via creative but implausible cost-benefit analyses. Atmospheric carbon dioxide is a stock and flow problem and these proposed regulations make a only a very tiny contribution to the flow side of the equation. That is just math.
The US carbon regulations won't influence future extreme weather or its impacts in any detectable way. Hard to believe I felt compelled to write that...
These regulations mainly switch electricity from coal to gas and thus do very little to increase the US proportion of carbon-free electricity generation.'
'I support the regulations and hope that they are implemented.'
By: Marc Morano - Climate DepotJune 3, 2014 1:52 PM
If implemented, they would represent a significant reduction in coal generation from about 39% of the mix to about 33%, a drop of about 15% from total 2012 coal generation (and under different scenarios it could be a bit more or less). The US economy has already seen a larger reduction in coal electricity generation — a 25% drop from 2005 to 2012 — and the economy appears to have survived intact.
However, despite this reduction, the overall change to the US electricity mix is best characterized as marginal, rather than revolutionary. This is especially the case from 2020 to 2030 where there is very little projected change in the mix.
In order to stabilize atmospheric concentrations of carbon dioxide at a low level (say 550 ppm or lower) requires that the carbon-free proportion of the global energy mix (not just electricity) increase from about 13% carbon free to more than 90%, regardless of how much energy the world ultimately consumes. The US in 2012 was about 13.5% carbon free. These regulations mainly switch electricity from coal to gas and thus do very little to increase the US proportion of carbon-free electricity generation.3
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