Good analogy! I was thinking the same thing.

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"J. Clarke" wrote in message
in.local...
By that logic a tenth of an ounce of black paint on your windhshield
won't have any effect on your driving. Try it sometime and let us know
how it works out for you.
Sorry, but he's right, you're showing collossal ignorance here. I
personally think that the anthropogenic part of AGW is a crock, but the
effect of CO2 on energy balance is fairly well understood. If you're
going to argue climate, learn something about it first.

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In article ,
says...

Scott Lurndal wrote:


This statement shows astounding ignorance about the carbon cycle
and the reasons that CO2 has risen from 230ppm to 400ppm in the
last century and a half. I'll give you a hint - the CO2 you
exhale
is not CO2 that has been sequestered for millions of years in
geologic coal or oil formations. Same applies to cow farts.

So long as the system is in equilibrium, i.e. no carbon is being
added to the system, the CO2 fraction in the atmosphere won't
change,
no matter how many people exhale, since the carbon they're exhaling
was recently (within a year or two) in the atmosphere (taken up by
plants, fed to cows, and eaten as hamburgers, then exhaled).

Have you actually worked out how much 400 parts per million
represents?

A penny weighs 2.5 grams. One million pennies weighs 2.5 million
grams, or
about two and a quarter TONS. Four hundred pennies comes in at about
two and
a quarter POUNDS.

This ratio is about equivalent to the weight of a coat of paint on a
big
diesel engine.

Asserting that a CO2 concentration of 400ppm affects the atmosphere
is
exactly equivalent to claiming the coat of paint on a engine affects
the
engine's performance.

By that logic a tenth of an ounce of black paint on your windhshield
won't have any effect on your driving. Try it sometime and let us know
how it works out for you.

Sorry, but he's right, you're showing collossal ignorance here. I
personally think that the anthropogenic part of AGW is a crock, but the
effect of CO2 on energy balance is fairly well understood. If you're
going to argue climate, learn something about it first.