KLC Lewis wrote:


Wrong focus. Yes, the entire paper supports that the recent CO2 rise is due
to human activity -- and that I do not dispute. It is clear that we are
generating CO2 which would not otherwise be put into the atmosphere.
Nevertheless, the amount that we are generating does not approach that which
is generated by natural processes.

No, you're focusing on the wrong issue. Take a look at the article
again. The whole point is the carbon *flux*. Without *our* input, the
flux, on average, is balanced (i.e. natural emitters = natural sinks).
Thus the *Increase* is due to man. The magnitude of the normal flux is
irrelevant since without us it's balanced. There are normal oscillations
in atmospheric carbon due to the many competing processes in
operation(emitters & sinks), but with addition of anthropogenic
processes those oscillations are now centered about an increasing trend
line. It's the rise in the mean carbon concentration about which those
processes oscillate that is the issue.

Keith Hughes