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On Fri, 7 Mar 2008 12:57:04 -0800 (PST), Dan
wrote: I know this is a waste of time but: Sorry to cloud your thinking, but here are the facts you desired. Unfortunately they don't square with your preposterous claims or 20' sea level rise. FACT: The National Academy of Sciences reported in 2001 that, "Because of the large and still uncertain level of natural variability inherent in the climate record and the uncertainties in the time histories of the various forcing agents...a causal linkage between the buildup of greenhouse gases in the atmosphere and the observed climate changes during the 20th century cannot be unequivocally established." It also noted that 20 years' worth of data is not long enough to estimate long- term trends. That was on 01. They've changed their minds FACT: Predictions of 6°C temperature rises over the next 100 years are at the extreme end of the IPCC range (read the report). Several of those from the committee were on TV recently and made the statements their published figures were ultra conservative. FACT: Both James Hansen of NASA--the father of greenhouse theory--and Richard Lindzen of MIT--the most renowned climatologist in the world-- agree that, even if nothing is done to restrict greenhouse gases, the world will only see a global temperature increase of about 1°C in the next 50-100 years. Hansen and his colleagues "predict additional warming in the next 50 years of 0.5 ± 0.2°C, a warming rate of 0.1 ± 0.04°C per decade." Your data is way out of date. I'm currently reading an article on Hansen (the guy you quoted above). In it Hansen's analysis shows that the earth warmed that 0.5C in the last 30 years for a current total of 0.9C since 1880. The original data was taken from too small an area. FACT: No one has provided data that conclusively links human activity to the temperature rise of 0.6 C over 100 years. To quote again. "To questions about whether this warming is natural or just a fluctuation the answer has become clear: The world is getting warmer." Hansen stated. "The fact agrees so well with what we calculate with our global climate model that I am confident we are looking at warming that is mainly due to increasing human-made greenhouse gases" Hansen is using the 1 deg C as a tipping point that will put us into dangerous territory. He figures at least a 2 to 3C rise by the end of the century "Which is a temperature Earth hasn't experienced since the middle of the Pliocene Epoch about three million years ago when sea level was roughly _25_METERS_HIGHER_ than it is today" (Again quoting Hansen) FACT: No one has proven a causal link between CO2 and global temperatures. It may be a cause, but is more likely an effect. In previous cycles the temperature rose and then "carbon forcing" caused the CO2 to rise. This time the CO2 rise is leading the temperature rise making it one of the causes rather than a result. So much for out-of-date "facts" when the same scientist says differently. The above remarks by Hansen can be found at www.giss.nasa.gov/research/features/temptracker/ Dan Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com |
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