97% consensus
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Iain Aitken
[Note: This essay is abstracted from my eBook Myths: Widely Held But False Beliefs In The Climate Change Crisis, available on Amazon]
In their Fifth Assessment Report the IPCC, the ‘internationally accepted scientific authority on climate change’, gave their opinion of how much of the recent global warming was caused by human activity: ‘It is extremely likely [95-100 percent confidence] more than half of the observed increase in global mean surface temperature from 1951 to 2010 was caused by the anthropogenic [i.e. man-made] increase in greenhouse gas concentrations and other anthropogenic forcings together’. Reflecting that opinion Wikipedia states that the ‘Scientific consensus on climate change’ is that ‘the Earth is warming and… this warming is mainly caused by human activities’. It claims that 97-100% of actively publishing climate scientists endorse this opinion. Similarly, NASA claim that, ‘A consensus on climate change and its human cause exists… human activities are the primary cause of the observed climate-warming trend over the past century.’ And in an October 2020 interview on CBS’s 60 Minutes climatologist Dr Michael Mann said, ‘There’s about as much scientific consensus about human-caused climate change as there is about gravity.’ So is it actually true that 97-100% of climate scientists explicitly or implicitly endorse this key IPCC opinion?
Although science is not remotely democratic (it only needs one scientist to prove that the ‘consensus view’ is wrong and it is wrong) the fact remains that if this 97-100% consensus assertion is true then it is indeed very powerful. If the ‘internationally accepted scientific authority on climate change’ says something is almost certainly true and almost all climate scientists in the world agree then it almost certainly must be true – mustn’t it? Whilst there is undoubtedly almost total scientific consens
https://wattsupwiththat.com/2022/02/10/the-misrepresentation-of-the-scientific-consensus-on-climate-change/
