This article provides a profile of a long-tenured authority on the hot topic (no pun intended) of global warming and presents a few of his very logical arguments (which have unsurprisingly been overlooked by mainstream media). A few excerpts follow:
Bryson is a believer in climate change, in that he’s as quick as anyone to acknowledge that Earth’s climate has done nothing but change throughout the planet’s existence. In fact, he took that knowledge a big step further, earlier than probably anyone else. Almost 40 years ago, Bryson stood before the American Association for the Advancement of Science and presented a paper saying human activity could alter climate.
“I was laughed off the platform for saying that,” he told Wisconsin Energy Cooperative News.
We ask Bryson what could be making the key difference:
Q: Could you rank the things that have the most significant impact and where would you put carbon dioxide on the list?
A: Well let me give you one fact first. In the first 30 feet of the atmosphere, on the average, outward radiation from the Earth, which is what CO2 is supposed to affect, how much [of the reflected energy] is absorbed by water vapor? In the first 30 feet, 80 percent, okay?
Q: Eighty percent of the heat radiated back from the surface is absorbed in the first 30 feet by water vapor…
A: And how much is absorbed by carbon dioxide? Eight hundredths of one percent. One one-thousandth as important as water vapor. You can go outside and spit and have the same effect as doubling carbon dioxide.
This begs questions about the widely publicized mathematical models researchers run through supercomputers to generate climate scenarios 50 or 100 years in the future. Bryson says the data fed into the computers overemphasizes carbon dioxide and accounts poorly for the effects of clouds—water vapor. Asked to evaluate the models’ long-range predictive ability, he answers with another question: “Do you believe a five-day forecast?”
Bryson says he looks in the opposite direction, at past climate conditions, for clues to future climate behavior. Trying that approach in the weeks following our interview, Wisconsin Energy Cooperative News soon found six separate papers about Antarctic ice core studies, published in peer-reviewed scientific journals between 1999 and 2006. The ice core data allowed researchers to examine multiple climate changes reaching back over the past 650,000 years. All six studies found atmospheric carbon dioxide concentrations tracking closely with temperatures, but with CO2 lagging behind changes in temperature, rather than leading them. The time lag between temperatures moving up—or down—and carbon dioxide following ranged from a few hundred to a few thousand years.