Quote:
Originally Posted by PBzeer
No Stu, I don't mean with or without ANYTHING. Just how much should the earth be warming, or cooling, at any given moment in time.
To determine that the earth is warming more than it should be, there has to be some benchmark to measure by. We can say that because of warming this or that MAY happen, but, by what standard do we determine that the amount of warming is more than it should be?
In other words, is gw bad, or is it bad because of the possible consequences?
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Just to be specific, in the link I provided is the IPCC meta-analysis detailing specific sources of radiative forcing (with error). The section starting on page 60 details forcing from non-man-made sources, and their contribution to the current warming trend. It's pretty good reading, especially (to me) the bit on short-term forcing due to volcanism.