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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: combjelly who wrote (314668)	12/9/2006 10:04:06 AM
From: 10K a day	Respond to of 1572098

I think this thread contributes about 7 percent alone....to GGE.

To: combjelly who wrote (314668)	12/9/2006 6:51:23 PM
From: steve harris	Read Replies (1) \| Respond to of 1572098

nonsense

To: combjelly who wrote (314668)	12/13/2006 8:28:47 PM
From: TimF	Read Replies (1) \| Respond to of 1572098

I agree that most of the additional CO2 is caused by human activity. OTOH CO2 isn't the only green house gas. (Water Vapor is the largest contributer to the greenhouse effect and there are other gases that contribute as well). As for your calculations. You have to consider that not all the carbon in coal goes to CO2 production. (Of course some of it that doesn't goes in to more problematic gases like CO). You right about the the atomic masses, and the mass of the atmosphere and the CO2 percentage. I don't know about the figures for coal production. If your figures for total production are correct than most of it has to disolve in water, or get used up by plants, or become part of carbonates or be bound up or transformed by some other process. Because 10^13 tons for new CO2 (and that's just from US and China) annually would increase the amount of CO2 in the atmosphere far faster than it has actually increased. Dumping that much in to the atmosphere (without it being elimated) would increase the concentration by over 500% in first year, rather than the less than 1% per year increase that has occured. "The concentration of atmospheric carbon dioxide at Mauna Loa Observatory exhibits a seasonal pattern that repeats with striking regularity from year to year. The amplitude of this seasonal signal, expressed either by peak-to-peak changes in concentration or as a series of harmonic terms, increased at an average rate of about 0.7 percent per year from 1958 to 1982." adsabs.harvard.edu eia.doe.gov "The atmospheric concentration of CO2 in 1990 was 353 parts per million by volume (ppmv), about 25 percent greater than it was before the Industrial Revolution (about 280 ± 10 ppmv prior to 1750). Atmospheric CO2 is increasing at about 0.5 percent per year." fermat.nap.edu "After water vapor, carbon dioxide is the most important greenhouse gas. The surface concentration of carbon dioxide is about 350 ppmv. Measurements indicate that carbon dioxide is increasing by about 0.5 percent per year." asd-www.larc.nasa.gov