From: Rik van Riel (riel@surriel.com)
Date: Thu Nov 24 2005 - 21:34:50 MST
On Thu, 24 Nov 2005, J. Andrew Rogers wrote:
> On Nov 24, 2005, at 3:55 PM, Phillip Huggan wrote:
> > When CO2 levels have historically risen, so have global temps.
> A common misconception fostered because it is useful to some ideological
> factions. When global temps rise, CO2 levels tend to rise, not the
> other way around.
Correlations are commutative. Causalities are not always
as clear to spot as the data suggests.
> All the ice core data clearly indicates that CO2 levels are *trailing*
> indicators of global temperature i.e. CO2 levels neither rise nor fall
> until after the temperature has done the same. In other words, there is
> more evidence that higher temperatures cause higher atmospheric CO2
> levels than the other way around with respect to the global climate.
This does not rule out the possibility that a small
temperature spike triggers CO2 release, and the CO2
then turns the temperature spike into a long term
temperature rise.
There are a lot of feedback cycles in play, and I
wouldn't be so quick to dismiss the opinion of the
scientific community...
-- "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." - Brian W. Kernighan
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