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In a previous comment, I have expressed astonishment as to why the physics of CO2 has met with rather little attention by skeptics – even though it appears to lend little support to a significant role of CO2 in temperature changes.
I am equally puzzled by the fact that the basic questions of how much CO2 emitted worldwide in a given period of time is absorbed and released again and how much of these stocks and flows can be ascribed to humans and how much to non-human natural processes, do not seem to represent a major area of concern with skeptics. Again, it appears that the alarmist position is not particularly solid.
Murry Salby has given an interesting lecture covering this issue – though, I must admit, I wish a more popular variant of his message were available.
