Hatton has released what he describes as an ‘A-level’ statistical analysis, which tests six IPCC statements against raw data from the National Oceanic and Atmospheric (NOAA) Administration. He’s published all the raw data and invites criticism, but warns he is neither “a warmist nor a denialistâ€, but a scientist.
Hatton performed a z-test statistical analysis of the period 1999-2009 against 1946-2009 to test the six conclusions. He also ran the data ending with what the IPCC had available in 2007. He found that North Atlantic hurricane activity increased significantly, but the increase was counterbalanced by diminished activity in the East Pacific, where hurricane-strength storms are 50 per cent more prevalent. The West Pacific showed no significant change. Overall, the declines balance the increases.
“When you average the number of storms and their strength, it almost exactly balances.†This isn’t indicative of an increase in atmospheric energy manifesting itself in storms.
Even the North Atlantic increase should be treated with caution, Hatton concludes, since the period contains one anomalous year of unusually high hurricane activity – 2005 – the year Al Gore used the Katrina tragedy to advance the case for the manmade global warming theory.
http://www.theregister.co.uk/2010/02/15/hatton_on_hurricanes/Nonsense, liberals NEVER exploit diasters for political gain.
