As I put together an updated version of my climate movie and powerpoint deck, I am constantly amazed how alarmist claims that man is causing [fill in the blank severe weather] via his CO2 emissions simply never pan out. I am not saying they don’t pan out because there is no causality proof – that goes without saying. No one has ever been able to or likely will ever be able to link a specific weather event like Katrina directly to CO2 emissions — but of course that does not stop them from trying and does not prevent a credulous media from lapping it up (and in fact there is a class action suit as we speak against oil and power companies for “causing” Katrina).
No, what I mean is that the supposed weather trend seldom if ever exists. What is happening is that alarmists are latching onto individual events in the tail ends of the normal distribution for weather and claiming that these events signal a shift in the mean. But they never actually publish data for the mean, and there is a reason for that. Time and time again, with hurricanes, US floods and droughts, severe storms, and tornados, when we look at the data we see no shift in the mean.
Here is a good example form Warwich Hughes. The Western Australia Premier says back in 2007″
Mr A.J. CARPENTER (WA Premier): “..It has stopped raining in the south west of Western Australia. The rain no longer falls from the sky in sufficient quantities to fill the dams to fill the pipes to fill the cups for people to drink…”
The reality: A one year drought in 2006 is being used to argue that the mean rainfall has shifted. It clearly has not.