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Those graphs don't support your claim that increasing temperature causes
increasing C02. They only show correleation between C02 levels and temperature. -- Best Regards, Mike http://photoshow.comcast.net/mikenoel "Matt Barrow" wrote in message ... "Dylan Smith" wrote in message ... On 2006-07-03, Matt Barrow wrote: "Dylan Smith" wrote in message ... On 2006-07-01, Matt Barrow wrote: 1) What percentage of annual CO2 production is human caused and what portion is natural? Human production is around 3% of annual planetary CO2 production. Very good!! Follow-up: What is the most common greeenhouse gas and what is the breakdown on human vs. natural sources? Water vapor is the most common greenhouse gas. In fact, the greenhouse effect is necessary for life as we know it in the first place. Without solar energy being retained by H2O, CO2 and other gases, the Earth would quite probably be rather frigid (although, if there was no water, it wouldn't be icy of course!) The human effect in the grand picture isn't that big (the Earth won't turn into another Venus) but that's not to say that it won't be significant. How much is "significant? The IPCC has (IIUC) estimated human influence to be 0.07C over the next 50 years. During the last 100 years, temps have increased 0.25F. It's not necessary to "destroy civilization" either to have less effect on the atmosphere. However, there's very strong evidence (overwhelmingly strong) that the current increase in CO2 concentrations is caused by us. Cite? And if your statement is correct, why did we have significant COOLING from 1940 to 1975? "Appearing before the Commons Committee on Environment and Sustainable Development last year, Carleton University paleoclimatologist Professor Tim Patterson testified, "There is no meaningful correlation between CO2 levels and Earth's temperature over this [geologic] time frame. In fact, when CO2 levels were over ten times higher than they are now, about 450 million years ago, the planet was in the depths of the absolute coldest period in the last half billion years." Patterson asked the committee, "On the basis of this evidence, how could anyone still believe that the recent relatively small increase in CO2 levels would be the major cause of the past century's modest warming?" http://www.canadafreepress.com/2006/harris061206.htm And "We are told, however that man-made carbon dioxide is the source of the global warming problem. As Professor Essenhigh (Robert Essenhigh, Professor of energy conservation at Ohio State University-MB) asks, "what has carbon dioxide to do with this"? He explains, "the two principled thermal-absorbing and thermal-emitting compounds in the atmosphere are water and carbon dioxide. However - and this point is continually missed - the ratio of water to carbon dioxide is something like 30-to-1 as an average value. At the top it is something like 100-to-1. This means that the carbon dioxide is simply 'noise' in the water concentration, and anything carbon dioxide could do, water has already done." "So," he asks, "if the carbon dioxide is increasing, is it the carbon dioxide driving the temperature or is the rising temperature driving up the carbon dioxide"? In other words, the carbon dioxide issue is irrelevant to the debate over global warming. " Yes, with a rather large delay; IOW, warming CAUSES CO2. Cite? http://www.sierraclub.ca/national/pr...k-ice-core.jpg Also: http://www.columbia.edu/itc/cerc/see...ecoregraph.jpg |
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