Does Human Produced CO2 causing dangerous Global Warming? sign now

Does Human Produced CO2 causing dangerous Global Warming?

We propose that the department of climate change,
1. publish on its web site the case against the following statement. (A)
2. that they justify with evidence the claims that they have made.(A) + (B)
3. the statement (B) also be examined for accuracy and bias (B)

(A) http://www.garnautreview.org.au/synopsis.htm
that human activities resulted in substantial global warming from the mid-20th century, and that continued growth in greenhouse gas concentrations caused by human-induced emissions would generate high risks of dangerous climate change.

(B) http://www.garnautreview.org.au/intro.htm
Scientific opinion and dissent
There is no doubt about the position of most reputed specialists in climate science, in Australia and abroad, on the risks of climate change (Chapter 2). There is no doubt about the position of the leaders of the relevant science academies in all of the major countries.1 The outsider to climate science has no rational choice but to accept that, on a balance of probabilities, the mainstream science is right in pointing to high risks from unmitigated climate change.
There are nevertheless large uncertainties in the science. There is debate and recognition of limits to knowledge about the times and ways in which the risk will manifest itself. Every climate scientist has views on some issues that differ from the mainstream in detail.
There are prominent dissenters on this matter, gathered under the rubric of sceptic. For the most part sceptic is a misnomer for their position, because these dissenters hold strongly to the belief that the mainstream science is wrong.
In a different category are a small number of climate scientists of professional repute who maintain that the mainstream science embodies misjudgments about quantities. These scientists, who accept the theory of the warming effects of higher concentrations of greenhouse gases, hold the view that these warming effects are relatively or even trivially small in comparison with many other causes of climate variations that are beyond the control of humans.
The dissent took a curious turn in Australia in 2008, with much prominence being given to assertions that the warming trend had ended over the last decade. This is a question that is amenable to statistical analysis, and we asked econometricians with expertise in analysis of time series to examine it. Their responsethat the temperatures recorded in most of the last decade lie above the confidence level produced by any model that does not allow for a warming trendis reported in Chapter 4 (Box 4.1).

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