Thread: "Bandwagons were us" or "Gwapple me gwapenuts"
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Old July 2nd 04, 02:07 PM posted to uk.sci.weather
Alan LeHun Alan LeHun is offline
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First recorded activity by Weather-Banter: Dec 2003
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Default "Bandwagons were us" or "Gwapple me gwapenuts"
In article lgate.org,
says...
Someone tell me where "they" proved that fossils were responsible for it
all.


Traditionally, the isotopic composition of carbon within the atmosphere
was accepted as being 99% C13 and 1% the radioactive C14.

The carbon in fossil deposits is entirely C13 as the C14 isotope has a
half life of only a little over 5700 years and has therefore all decayed
millennia ago.

By measuring the current composition of isotopes of Carbon within the
atmosphere, it is possible to determine how much is natural and how much
has come from fossil fuels.

The last I heard, about 20% of atmospheric methane has been shown to
originate from fossil fuels. I don't have a figure for CO2 but 30% has
been mentioned.

ICBW, being no more than an interested spectator to the GW debate.

--
Alan LeHun
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