On Wed, 5 Aug 2009 18:51:38 -0700 (PDT), Roger Coppock
wrote:

Wake up, Al! I've answered this question for you before.

On Aug 5, 6:02Â*pm, Al Bedo ? wrote:
Great! 1.5K/Century

Not even at the IPCC best estimate of the "Low Scenario"

To look at acceleration of a climate trend, one
needs about 5 decades to achieve statistical
significance. We'll need to wait another two
decades to collect enough satellite data. Meanwhile,
there are more than enough conventional ground
data to see that the warming is clearly accelerating.

http://members.cox.net/rcoppock/Slope1952-2007.jpg

http://members.cox.net/rcoppock/hadSlope1850-2008.jpg


What is the trend after the 2nd time around on a roller
coaster?