From: "Geo." 

"John Beckett"  wrote in message
news:a6to23hm1en91a2m9olgsgq8um4nut8isn{at}4ax.com...
> "Geo."  wrote in message
news::

> It's likely that I misunderstood your earlier remark:
>> Lots of parts of the world have gone thru the industrial revolution
>> already
>> and the change was that the CO2 content in our atmosphere
>> increase by 0.002%.
>
> I interpreted the 0.002% as a stab at converting ppm to %.

It's a way to express CO2 as a percentage of the overall atmosphere, to
give you a feel for just how small a difference we are talking about.

> Here are the figures I'm using (please check!):
>
> CO2 is 380ppm of atmosphere now (0.038% by volume).
> It was 280ppm (0.028%) 200 years ago.
>
> CO2 concentration has increased from 0.028% to 0.038%.
>
> So there is 35% more CO2 in the atmosphere now than there was at the start
> of the industrial revolution.

These numbers are mathematically correct, but they are designed to prove a
false point. It's like my example of someone increasing their body weight
by 200% to prove that it's going to throw the earth off balance, without
looking at body weight as a percentage of the total weight of the planet it
seems like this could be possible, 200% is a big change, yet when you see
the whole picture you realize it's totally illogical.

Geo.

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