The survey of 3,146 earth scientists from around the world found overwhelming agreement that in the past 200 years, mean global temperatures have been rising, and that human activity is a "significant contributing factor" in changing mean global temperatures.
Peter Doran, an associate professor of earth and environmental sciences at the University of Illinois at Chicago, along with former graduate student Maggie Kendall Zimmerman, conducted the survey late last year.
The findings appeared Monday in the journal "Eos, Transactions," a publication of the American Geophysical Union.
"The debate on the authenticity of global warming and the role played by human activity is largely nonexistent among those who understand the nuances and scientific basis of long-term climate processes," the researchers conclude.
Doran determined that climatologists who are active in research showed the strongest consensus on the causes of global warming, with 97 percent agreeing humans play a role.
Petroleum geologists and meteorologists were among the biggest doubters, with only 47 and 64 percent, respectively, believing in human involvement.
"The petroleum geologist response is not too surprising, but the meteorologists' is very interesting," he said. "Most members of the public think meteorologists know climate, but most of them actually study very short-term phenomena."
Doran was not surprised by the near-unanimous agreement by climatologists.
"They're the ones who study and publish on climate science," he said. "So I guess the take-home message is, the more you know about the field of climate science, the more you're likely to believe in global warming and humankind's contribution to it."
Like I said, this is a rather telling report. One can apply this to a lot of other issues, such as.... oh, I don't know.... catastrophic black hole at the LHC destroying our earth? You'll notice that the only people who are going nuts over such a thing are the ones who can't work through a simply QM problem.