23 Sep '11, 7pm

Evaporation from Trees Has Global Cooling Effect

Doesn't this poke a pretty serious hole in the theory of man-made global warming? Contrary to popular belief, the climate models used by global warming proponents have a relatively small direct impact of carbon dioxide on global temperatures (around 0.6 degrees F if I remember correctly). The biggest impact is supposed to be an indirect impact of this warming causing increased evaporation which causes more water vapor in the atmosphere. According to the models, this indirect effect is far bigger than the direct effect of carbon dioxide. If this study is correct, then the indirect effect of water vapor does not increase temperatures, but it actually decreases temperatures. This suggests that carbon dioxide has a much smaller impact on temperatures than the current models suggest. Of course, one study does not prove anything, but if it can be replicated and further quantifie...

Full article: http://www.ecogeek.org/preventing-pollution/3600-evaporat...

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