David:
I have stated several times in this thread that I am not an AGW
denier. I am just trying to understand why it is nearly accepted as a
proven fact, when like you say, 100 more years of research are
required. There is good evidence that the burning of fossil fuels
accounts for the additional CO2 in the atmosphere, I am told, yet the
C14(not 13?) ratio has increased only 0.15% against a normal variation
of 0.05% Sounds pretty thin to me, in spite of some claiming it's a
huge amount. It may be tough for me to comprehend, because in my work
whether a sample contains 10 ppb of CCl4(which now I'm told isn't even
organic)or 10.015 ppb is not exactly an Earth shattering difference.
In fact, it would be well within the limits of precision and
reproducibility and I would be very pleased with the result. By my
standards, a trivial deviation with all kinds of possible sources of
error, but still totally irrelevant.
On Jan 16, 5:52 pm, "David B. Benson" <[EMAIL PROTECTED]> wrote:
> On Jan 15, 7:49 pm, okc chemist <[EMAIL PROTECTED]> wrote:
>
> > I am familiar with both the C13 ratios and the role that GHGs play in
> > keeping the planet heated to temperatures much more bearable for
> > humans. ...
>
> Apologies. I (and so you) meant C14/C12 ratios. I gather that you
> accept that the excess carbon in the active carbon cycle is of fossil
> origin, placed there by humans burning fossil fuels. I gather that
> you accept that additional CO2 in the atmosphere (all else being
> equal) will warm the planet. Then why do you not accept AGW?
>
> Once the physics of global warming gases is understood (at least 100
> years now) and once the source of the excess carbon is understood to
> be anthropogenic, it seems to me that scientific methods directly
> arrive at the conclusion of AGW.
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