Abraham still has not proven that man made global warming is a fact. There is no consensus in the scientific community. Period.
I will never prove ANYTHING in the natural sciences. Neither will anyone else. But I can show evidence demonstrating the likelihood (or unlikelihood) of all manner of things. Regarding the consensus of climate scientists in support of the IPCC position that the primary cause of the last 150 years' global warming is human activity (GHG emissions and deforestation), I offer the following:
Here is an abbreviated version of the information noted in
Scientific opinion on climate change - Wikipedia, the free encyclopedia
and
http://en.wikipedia.org/wiki/Surveys...climate_change
1) 2004, Science Historian Naomi Oreskes conducted a study of the scientific literature on climate change:
Out of 928 papers' abstracts from refereed scientific journals between 1993 and 2003,
NONE disagreed with the consensus position (AGW).
2) 2007, Harris Interactive surveyed
489 randomly selected member of either the AMS or the AGU:
97% agreed that temperatures had increased over the prior 100 years
84% said they personally believed human-induced warming was occurring
74% agreed that scientific evidence substantiates human-induced warming is taking place
5% said they thought human activity did NOT contribute to greenhouse warming
3) 2008, Dennis Bray and Hans von Storch invited 2,058 climate scientists from 34 different countries to participate in a web-bases survey.
373(18.2%) of invited scientists responded.
o To the question "How convinced are you that climate change, whether natural or anthropogenic, is occurring now?",
ALL respondents answered that they agreed to some small extent, some large extent or very much.
NONE responded that they did not agree at all.
o To the question "How convinced are you that most of recent or near future climate change is, or will be, a result of anthropogenic causes?"
98.65% of respondents agreed to a small extent, a large extent or very much.
1.35% did not agree at all.
4) 2009, Peter Doran and Maggie Zimmerman, at UI at Chicago, polled 10,257 Earth scientists and
received responses from 3,146 of them. Results were analyzed both globally and by specialization. 79 respondents listed climate science as their area of expertise AND had published more than 50% of their recent peer-reviewed papers on the subject of climate change.
Among the 79 actively publishing climate scientists:
o
96.2% (76) believed that mean global temperatures had risen compared to pre-1800s levels.
o
94.9% (75) believed that human activity is a significant factor in changing mean global temperatures
Among
ALL 3,146 Earth scientist respondents:
o
90% agreed that temperatures had risen compared to pre-1800s levels
o
82% agreed that humans signficantly influenced global temperatures
5) 2010, Proceedings of the National Academy of Sciences of the US, Anderegg, Prall, Harold, and Schneider, 2010, reviewed publication and citation data for
1,372 climate researchers and found:
o
97-98% of the climate researchers most actively publishing in the field support the tenets of ACC (Anthropogenic Climate Change) outlined by the Intergovernmental Panel on Climate Change
o
the relative climate expertise and scientific prominence of the researchers unconvinced of ACC are substantially below that of the convinced researchers
6) 2011, Farnsworth and Lichter, Repeated the 2007, Harris Interactive survey of AMS and AGU members. Published in the International Journal of Public Opinion Research a survey and analysis of
489 scientists working in academia, government, and industry.
o
97% agreed that global temperatures have risen over the past century
o
84% agreed that "human-induced greenhouse warming" is now occurring
o
5% disagreed with the idea that human activity is a significant cause of global
warming
7) 2013, Environmental Research Letters, John Cook, Dana Nuccitelli, Sarah A Green, Mark Richardson, Bärbel Winkler, Rob Painting, Robert Way, Peter Jacobs and Andrew Skuce reviewed 11,944 abstracts of scientific papers,
finding 4,014 which discussed the cause of recent global warming and reporting that 97.1% endorsed the consensus position that humans are causing global warming.
8) Additionally, the authors of the studies were invited to categorise their own research papers. Among the
1,381 authors who chose to participate, 97.2% rated their own papers as supporting the AGW consensus.
9) 2014, James Lawrence Powell, a former member of the National Science Board and current executive director of the National Physical Science Consortium, analyzed
13,950 published research papers on global warming and climate change between 1991 and 2012 and a follow-up analysis of
2,258 peer-reviewed climate articles with 9,136 authors published between November 2012 and December 2013 and found:
o 24 out of 13,950 (0.172%) rejected anthropogenic global warming [leaving
99.828%]
o 1 out of the 2,258 (0.044%) papers in the follow-up rejected anthropogenic global warming [leaving
99.956%]
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So, Owl, do you still believe no consensus among climate scientists has been shown to exist?