Jim Long's request for more data is understandable. It is one of the many reasons behind continued weather observation programs around the world.
Jim's intervention gives me the opportunity to further explain how meaningful and reliable statistical data is derived.
As you can see from the graphs that I published ( http://www.weather-in-canada-observer.com/global-warming-facts.html ) the temperatures vary wildly, both above and below the 30 year moving average, from one year to the next.
Such yearly variations are the norm. In all but one region (west coast), I could not detect evidence of global warming over Canada during the last 30 years!
It will take years before anyone can tell if there is a trend setting in, or not, on the Canadian west coast, or anywhere else in Canada, for that matter.
For all we know, the west coast warming may reverse. When, and why? That's what we would all like to know. But, right now, we don't know enough about the - long term - causes behind climate variations to predict anything.
I will have to wait at least another 30 years before I, or any one else, can detect a verifiable trend. In statistics, any sample must have at least 30 elements of (verified) data before the analyzed results can be considered significant.
From where I stand, the last 30 only revealed a warming trend on the west coast of Canada ... but none elsewhere.
I won't be around, 30 years from now. But, I'm sure someone will be there to take a cold hard look at the data, then.
May 02, 2009 Rating
New advisorNEW by: Cypress
A visitor on this Web site, who wishes to remain anonymous, has contributed the following.
I invite you to pay close attention to Mr. Holdren's presentation. Run if a few times, if need be.
Among the many high points of Professor Holdren's presentation is his remark on the scientists who submit that the sun - not man - is the dominant influence in climate changes.
Very enlightening.
...
"Hi,
If you guys just watch this movie of the new science advisor John Holdren of president Barack Obama Short version of his presentation: http://usclimateaction.org/userfiles/flash/Holdren.html
Thnx for your time. Cypress".
Jan 31, 2008 Rating
More info please!NEW by: Jim Long
I have been looking for evidence, as in un-manipulated data, on actual warming or cooling effects on the earth. Your 2007 data is good. Is the trend on the Canadian pacific coast continuing? Have the temperatures on the rest of Canada continued to be within historical norms?
I do not like politicians trying to force me to believe their statements, positive or negative, without proof.
I have yet to see any evidence that CO2 has created a warming effect. Even the truly large amounts of CO2 released by volcanoes do not seem to be enough to counter the cooling effects of other pollutants in the atmosphere.
