Global warming consensus - Cracking or Broken?
Posted: Thu Jul 24, 2008 9:41 am
Looks like the plot thickens on the demise of the GW "consensus".
http://www.oregonlive.com/news/oregonia ... xml&coll=7
A snippet:
Elsewhere, a former climate change alarmist detailed what you might call his change of science. David Evans was a consultant to the "Australian Greenhouse Office" from 1999 to 2005. He helped craft the carbon accounting model measuring Australia's Kyoto Protocol compliance.
"When I started that job in 1999 the evidence that carbon emissions caused global warming seemed pretty good . . .," he wrote recently in The Australian. "The evidence was not conclusive, but why wait until we were certain when it appeared we needed to act quickly? . . . But since 1999 new evidence has seriously weakened the case that carbon emissions are the main cause of global warming, and by 2007 the evidence was pretty conclusive that carbon played only a minor role and was not the main cause of the recent global warming."
Evans notes a few telling facts: One, scientists have looked for hot spots in the atmosphere -- places where a possible cause of global warming occurs first and most -- and have found . . . none: "If there is no hot spot then an increased greenhouse effect is not the cause of global warming." Two, he points out what scientists have found: Ice-core samples showing the six global warmings over the past half-million years occurred an average of 800 years before any uptick in atmospheric carbon, satellite temperature readings showing the recent warming trend ended in 2001, and the temperature has fallen about 0.6 C in the past year -- to the 1980 level.
http://www.oregonlive.com/news/oregonia ... xml&coll=7
A snippet:
Elsewhere, a former climate change alarmist detailed what you might call his change of science. David Evans was a consultant to the "Australian Greenhouse Office" from 1999 to 2005. He helped craft the carbon accounting model measuring Australia's Kyoto Protocol compliance.
"When I started that job in 1999 the evidence that carbon emissions caused global warming seemed pretty good . . .," he wrote recently in The Australian. "The evidence was not conclusive, but why wait until we were certain when it appeared we needed to act quickly? . . . But since 1999 new evidence has seriously weakened the case that carbon emissions are the main cause of global warming, and by 2007 the evidence was pretty conclusive that carbon played only a minor role and was not the main cause of the recent global warming."
Evans notes a few telling facts: One, scientists have looked for hot spots in the atmosphere -- places where a possible cause of global warming occurs first and most -- and have found . . . none: "If there is no hot spot then an increased greenhouse effect is not the cause of global warming." Two, he points out what scientists have found: Ice-core samples showing the six global warmings over the past half-million years occurred an average of 800 years before any uptick in atmospheric carbon, satellite temperature readings showing the recent warming trend ended in 2001, and the temperature has fallen about 0.6 C in the past year -- to the 1980 level.