View Single Post
  #400  
Old March 21st 08, 01:06 PM posted to rec.aviation.piloting
Dan Luke[_2_]
external usenet poster
 
Posts: 713
Default Global Warming The debbil made me do it


"Dan" wrote"


Here's some easy reading to consider:
http://www.climatechangeissues.com/f...5mckitrick.pdf


And here's some mo

http://www.ucar.edu/news/releases/2005/ammann.shtml


In response to Congressional inquiries sparked by McIntyre's and McKitrick's
criticisms of Mann, et al. '98 & '99, the NRC conducted an investigation into
the statistical methods that produced the "hockey stick" shape of the proxy
reconstruction. The NRC said:

"The basic conclusion of Mann et al. (1998, 1999) was that the late 20th
century warmth in the Northern Hemisphere was unprecedented during at least
the last 1,000 years. This conclusion has subsequently been supported by an
array of evidence that includes both additional large-scale surface
temperature reconstructions and pronounced changes in a variety of local proxy
indicators, such as melting on icecaps and the retreat of glaciers around the
world, which in many cases appear to be unprecedented during at least the last
2,000 years. Not all individual proxy records indicate that the recent warmth
is unprecedented, although a larger fraction of geographically diverse sites
experienced exceptional warmth during the late 20th century than during any
other extended period from A.D. 900 onward."

Bottom line? The "hockey stick" controversy is a dead horse, but deniers are
still beating the hell out of it, trying to ride it one more mile.