Liberty Australia

Letter to the Editor
13/11/1997
The Greenhouse Hoax

The doom merchants claim that a runaway greenhouse effect is about to cause global flooding because of the emissions of industry and cows!

Not so, the Greenhouse Effect has kept earth habitable for the past 500 million years despite the awesome disturbances of a temporary nature caused by meteors, volcanoes and polar shifts, plus the normal extremes caused by solar fluctuations and the seasonal variations known as Milankovich cycles.

Every global extreme for the past 5000 years has coincided with fluctuations in solar output! The heat waves of the Sumerian, Pyramid, Stonehenge, Roman and the Medieval Maximums were all due to increased sunspot activity; whereas the Egyptian, Homeric, Greek, Sporer and the Maunder Minimums or little ice ages were all caused by reduced sunspot activity.

The greenhouse effect has kept our planet at +15degC mean temperature within a 5deg range for the past 150,000 years. Solar output can vary by a range of 3% which represents 8.64deg on the Kelvin scale, more than capable of causing the last 10 changes.

The natural earth cycles of orbit, tilt and wobble known as the Milankovich mechanism, are the causes of ice ages and interglacials such as we live in.

Therefore, all of these effects of a lasting nature were caused by the Sun! Every event predates the Industrial Revolution and the falsely blamed CO2 increases!

The greenhouse gases of water vapour, oxygen, CO2, methane and nitrous oxide allow solar radiation to reach and warm the earth, excess heat is radiated back into space as infrared. There are no gases in the atmosphere that can block this infrared at the windows of 3-4 and 8-12 microns, therefore an increase in quantity of gases can make no change.

Albedo is another control where more heat increases evaporation and clouds that will reflect more incoming solar radiation away from earth.

Even if mans feeble efforts could heat the atmosphere, the polar caps will not melt, as the ocean contains 1 million times the energy of the atmosphere. Only the Milankovich cycles can melt the polar ice!

Carbon tax is being levied on a Green"Hoax" theory that ignores the facts of past paleo history and atmospheric logic, and the 1940-1980 period where earth cooled 0.3deg while the CO2 levels were increasing!