[SampleMan]

The CO2 output from Pinatubo was about 42 Mt, and man puts out about 7100 Mt a year. The more important number is that all natural sources release about 150,000 Mt

Is it safe then to say that man's 42 Mt is less than the average deviation of natural input? I am willing to bet that variations in natural input actually dwarf man's total contribution.

[palmer]

I was pointing out that man's 7100 is much more important than a big volcano (pinatubo 1991) at 42. But all natural sources esp. oceans and biosphere are much bigger at 150,000.