Re: R. W. Wood's "Note on the Theory of the Greenhouse"
- From: Edward Green <spamspamspam3@xxxxxxxxxxx>
- Date: Sat, 5 Apr 2008 16:45:26 -0700 (PDT)
On Apr 4, 11:02 pm, tadchem <tadc...@xxxxxxxxxxx> wrote:
On Apr 4, 9:15 pm,EdwardGreen <spamspamsp...@xxxxxxxxxxx> wrote:
Leaving out the tainted pop-sci, is there a credible mechanism for CO2
to make the atmosphere a significantly more effective "radiation
trap"?
The 'mechanism' behind the AGW thesis requires that CO2 in the
atmosphere absorbs IR being radiated from the ground and re-radiate it
*preferentially* downwards, back towards the ground. You will notice
that their little gee-whiz diagrams never show the CO2 radiating IR
out into space. Why not? It DOES happen, but that doesn't fit with
their story.
A CO2 molecule doesn't know up from down. It re-radiates as much IR
out into space as it does back towards the ground, and as much as the
ground would. There is nothing in the physics that would induce the
CO2 to act as an IR mirror.
All that sounds impeccable. If I reserve a scintilla of doubt (ooh-
boy, spell checker working overtime today), it's because you may be
refuting a false oolie. I have little doubt the argument you cite
exists and that you have refuted it, but that could simply mean those
you refute distort a correct argument, or are orthogonal to one.
At stasis the Earth must reradiate all incident energy, on average --
discounting the small imbalance which would move average temperature
when stasis does not exist. Let's put it this way: it would be
miraculous if atmospheric composition did _not_ have some effect on
the temperature of balance, though of course this doesn't tell us how
much and which way.
If someone claims moose can't survive the cold because their antlers
radiate too much heat, that may be nonsense -- but I'm left no wiser
about the true situation of the moose after dismissing the nonsense.
.
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