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Pastimes : Let's Talk About Our Feelings!!!
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To: greenspirit who wrote (10568)7/2/1997 12:19:00 PM
From: ZinMaster   of 108807
 
Strongest evidence (that I'm aware of) is the average surface ocean temperature data. The oceans provide a natural low frequency filter to remove the usual annual and local fluctuations from the measurements. The best measurements of average temperatures have been made with very low frequency sound propagation across entire oceans. The time taken to cross the ocean gives a very precise measure of its average temperature. Since these are new measurements, it will be a few years before a trend can be identified by that technique.

At least as disturbing (to this non-pseudo scientist), is the increase in atmospheric carbon dioxide levels over the last century. CO2 levels have been accurately measured over the last 50,000 years or so, as well as levels of other atmospheric components, by taking gas samples from bubbles in glacier masses. Recent measurements from Greenland's ice mass show that the historic use of fossil fuels is contributing a great deal of CO2 to the atmosphere.

It is not at all far-fetched or "pseudo" to make the leap from there to "greenhouse effect". The scientific basis - both experimental and theoretical - for a relationship between greenhouse gasses (IR absorbers) and decreased radiation of heat into space is quite sound.

Sadly, human population growth may eliminate global warming as an issue of great importance long before things heat up much more.

> There goes another 2000 kids who could have had
> a college education.

Right. There goes another 2000 kids.

-zm
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