Bill,
It's simple to appreciate: you know that fossil carbon has been underground a
long time, and isolated from irradiation by cosmic rays from the sky. Thus,
its C-isotopic ratio is different from the C in renewable fuels (by the same
mechanism and understanding that we rely on in doing Carbon-14 dating of dead
things).
The C-14 decays, and it is not refreshed underground in the fossil carbon fuels
because it cannot "see" cosmic rays from the sky while it is buried: it's
shielded until we dig it up. It comes out of the ground largely depleted of
C-14. Virtually all the fossil C is C-12, vs. C-14.
We note, on isotopic monthly-average isotopic analyses of CO2 from Mauna Loa
and from other sampling sites, that the C-14 ratio in atmospheric CO2 is
decreasing with time, as CO2 concentration goes UP. This means that (C-12)O2
is diluting the gas. The C-14 depleted CO2 comes from burning fossil fuels,
and from nowhere else.
QED.
It's a beautiful line of evidence, really.
I make no claims about warming, as I am not an ice-guy. Some say too that I am
not a nice-guy, tho' Buddha knows I try to be.
But the increase in CO2 conc. is due to burning fossil fuels, if you follow the
lovely physical evidence. Does it not "make the ganglia TWITCH"?
--Joe
> William Rintala <brintala@...> wrote:
>
> Which isotopes there are 16 of them? What isotope is produced solely from
> the
> burning of fossil fuels?
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