>>4492592 lb

>>4492705 lb

>>4492807 lb

 

The whole 97% climate consensus is pure BS.

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The 97% "Consensus" is only 75 Self-Selected Climatologists

Sunday, August 1, 2010

 

[Warmistas claim that] while 97% of "climate scientists think that global warming is 'significantly' due to human activity," a shocking 72% of news coverage does not reflect this "consensus" and similarly 74% of the public are not convinced.

 

However, close examination of the source of the claimed 97% consensus reveals that it comes from a non-peer reviewed article describing an online poll in which a total of only 79 climate scientists chose to participate. Of the 79 self-selected climate scientists, 75 agreed with the notion of AGW. Thus, we find climate scientists once again using dubious statistical techniques to deceive the public that there is a 97% scientific consensus on man-made global warming; fortunately they clearly aren't buying it.

 

http://hockeyschtick.blogspot.com/2010/08/97-consensus-is-only-76-self-selected.html

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The commentary below is based on these two documents:

 

The Anderegg paper (described below):

https://www.pnas.org/content/pnas/early/2010/06/04/1003187107.full.pdf

 

The Zimmerman master's thesis that came up with the 97% consensus is for sale here:

http://www.lulu.com/shop/m-r-k-zimmerman/the-consensus-on-the-consensus/ebook/product-17391505.html

 

The commentary that destroys the 97% myth:

 

https://fcpp.org/2012/11/06/climate-scientists-consensus-based-on-a-myth/

 

Climate scientists’ “consensus” based on a myth

Blog, Commentary, Tom Harris/November 6, 2012

 

Doran/Zimmerman global warming poll a tragic example of research gone wrong

 

It’s a “fact” asserted by political leaders, media and activists worldwide. Important public policy and corporate decisions are based on it. Researchers and public opinion survey coordinators take it as a given. School children and college and university students are assured it is true.

 

It is the idea that scientists agree that we are causing climate catastrophe. It is perhaps best summed up by the following statement, one heard often over the past three years:

 

“97% of climate experts agree that humanity is causing dangerous global warming and other problematic climate change because of our greenhouse gas emissions.”

 

No poll of experts has actually shown this. There has never been a reputable worldwide survey of climate scientists that has even asked the question. In fact, it has never even been demonstrated that there is any “global scientific consensus about the climate crisis”, as Al Gore continually assures us that there is.

 

This is simply one more of the many urban legends that permeate the climate debate, myths that are costing societies across the world billions of dollars every year.

 

Two pieces of evidence are most often cited to support the 97%/consensus argument:

 

1. A 2010 paper in the Proceedings of the National Academy of Sciences of the United States (PNAS) by Anderegg et al.

 

1. A poll conducted in April 2008 by Professor Peter Doran and then-graduate student Margaret R. K. Zimmerman at University of Illinois at Chicago. The survey results were summarized in a paper published in January 2009 in the science journal EOS.

 

Contrary to popular belief, the Anderegg et al study did not poll any experts at all. Instead, the paper’s authors merely evaluated the publication record of scientists they chose to represent two sides in the global warming debate. This study has been roundly condemned as worse than useless by several authors and, because I was personally involved in assembling some of the lists of experts cited by the researchers and so understand the limitations of those lists, I will explain in a future FCPP blog posting why the Anderegg et al study is not a meaningful indicator of expert opinion about this topic.

 

The Doran/Zimmerman study, which did poll experts, has also been thoroughly debunked by many writers and so there is little point in repeating their criticisms in this blog posting. However, there are two problems with the study that have received little or no coverage to date. Both of these problems destroy the poll’s credibility as a reliable measure of the stance of climate scientists on the supposed climate crisis.

 

[Much moar at the fcpp.org website]