Tuesday, March 31, 2009
Pacific Decadal Oscillation - ?????
I'm sure you know all about it.
The theory that humans are causing global warming is getting shakier by the day.
Here's an argument that many "so-called" facts and measurements are, at best, cloudy...
The theory that humans are causing global warming is getting shakier by the day.
Here's an argument that many "so-called" facts and measurements are, at best, cloudy...
Ronald Bailey explains at Reason.com:
"What they found is that clouds control warming (and cooling for that matter) rather than the reverse. It is generally agreed that a doubling of carbon dioxide in the atmosphere by itself would boost global temperatures by about 1 degree Fahrenheit. But the climate models all find that this increase in temperature sets off a positive feedback loop in which the atmosphere holds more water vapor which boosts temperatures further. According to the IPCC's latest report, this process could increase global average temperatures by between 2 and 11 degrees Fahrenheit by 2100.
Obviously, it makes a big difference if the temperature falls in the lower or higher end of that range. Spencer's recent research suggests that clouds are not a positive feedback, but actually operate to moderate temperature increases. If he is right, those results imply that future warming will be only about 1 degree Fahrenheit by the end of this century."
