Well-researched study of global warming
Ian Plimer, Professor of Mining Geology at the University of Adelaide, has a lifetime of academic experience. Using the unfashionable, rigorous sciences of geology, astronomy and solar physics, he has written a superbly well-researched study of global warming, with 2,311 references to the scholarly literature.
He shows how forces other than human production of CO2 drive climate change, like the sun, the earth's orbit and geological processes such as plate tectonics. 186 billion tonnes of CO2 enter the atmosphere every year: just 3.3% comes from human activities, 57% is given off by the oceans and 38% is exhaled by animals (including us). Since natural processes, not manmade CO2 emissions, change the climate, we cannot change it by controlling CO2 emissions.
In previous glaciations - the Ordovician 440 million years ago, the Permo-Carboniferous 260-300 million years ago, and the Jurassic 140 million years ago - atmospheric CO2 was far higher than now. Even as recently as 1935-50, atmospheric CO2 was higher than now.
The Cretaceous period, 100 million years ago, was 6-14 degrees Celsius warmer than now. The Holocene maximum, 6,000 years ago, was 6 degrees Celsius warmer than now, yet the Greenland ice sheet did not disappear (nor did polar bears) and the Antarctic ice sheet grew. The Roman Warming of 250 BC to 450 AD was 3 degrees Celsius warmer than now, as was the Medieval Warming of 900-1280.
As Plimer sums up, "If it is acknowledged that there have been rapid climate changes before industrialisation, then the human production of CO2 cannot be the major driver for climate change. . climates far warmer than the Late Twentieth Century Warming existed before industrialisation and human emissions of CO2."
Yet an editor of the Intergovernmental Panel on Climate Change (IPCC)'s 1996 'Summary for Policy makers' deleted the words: "None of the studies cited above has shown clear evidence that we can attribute the observed changes to the specific cause of increases in greenhouse gases . No study to date has positively attributed all or part (of the climate change observed) to (man-made) causes." He added instead, "the balance of evidence suggests that there is discernible human influence on global climate."
Plimer shows how the sun is the major driver of climate change. Every hour, the sun delivers to the earth as much energy as humans use in a year.
He estimates that the sun accounted for 80% of the 20th century warming. Sunspot activity cut cosmic radiation, reducing cloud and warming the earth. Since 2000 there has been less sunspot activity, which increases cosmic radiation, creating more cloud and cooling the earth.
A study of 246 glaciers from 1946 to 1995 found no sign of a global trend towards more melting. Greenland and the Arctic were warmer in the 1930s than they are now. Arctic sea ice has increased since 2008.
Total sea ice increased by 8% between 1978 and 2005. Plimer concludes that ice melt could cause, at most, a 5-10 centimetres sea-level rise by 2100.
Plimer dissects the Greens and their pin-up boy Al Gore. The Green programme is black-outs, because it would cut the base load energy supplies of electricity that sustain our economy, jobs and living standards.
Plimer reminds us that Gore was a director of the now-bankrupt Lehman Brothers, who saw carbon emissions trading as their private scam. Plimer writes, "Emissions trading will enrich a few and make most people poorer."
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Overview
Climate, Sea Level, And Ice Sheets Have Always Changed, and the changes observed today are less than those of the past. Climate changes are cyclical and are driven by Earth's position in the galaxy, the Sun, wobbles in Earth's orbit, ocean currents, and plate tectonics. In previous times, atmospheric carbon dioxide was far higher than at present but did not drive climate change. No runaway greenhouse effect or acid oceans occurred during times of excessively high carbon dioxide. During past glaciations, carbon dioxide was higher than it is today. The non-scientific popular political view is that humans change climate. Do we have reason for concern about ...