By Viv Forbes
A "greenhouse gas" is one capable of
absorbing infra-red (IR) radiation.
The most common atmospheric gases with such
properties are water vapour and carbon dioxide (CO2). Water vapour is far more
abundant with an average of 20,000 parts-per-million (ppm) in the atmosphere
compared to just 395 ppm of CO2. Moreover water vapour is more effective as a
greenhouse gas because it can absorb IR radiation over far more bands of the IR
Therefore, if man-made CO2 causes dangerous global
warming, (a dubious proposition anyway), then man-made water vapour is far more
The two main electricity generation fuels in
Australia are coal and gas. Coal is a dense fuel with a high carbon content
which, when burnt, produces mainly CO2 with some water vapour. Natural gas has
more hydrogen and less carbon and produces a higher proportion of water vapour,
the main greenhouse gas.
Thus if the climate alarmists are really scared of
man-made greenhouse gases, they should be promoting coal instead of gas or
systems that need 100% gas backup, such as wind. Gas generates copious
quantities of both “greenhouse gases”.
And if they believe a tax on man-made greenhouse
gases will control the climate, a tax on steam makes more sense than a tax on
Finally, if they want "zero emissions" of
either greenhouse gas, the only significant energy sources that qualify are
nuclear, hydro and geothermal. Naturally the only one unlikely to prove widely
useful in Australia, geothermal, is the only one promoted by the greens.
Maybe the climatists are not fair dinkum?
Or maybe the whole man-made global warming scare is
an unscientific fraud?
a look at how well the IPCC forecasts of dangerous man-made global warming are
working out see here: