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#11
21-12-2007, 10:24 PM
posted to alt.home.lawn.garden
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Global warming my ass!
Red wrote: On Dec 20, 11:59 pm, "Dioclese" NONE wrote: "Ryan P." wrote in message .. . ecarecar wrote: Before you relax in you complacency, I think you should check on the rate of change during the "vast number of major changes in Earth's past history." I think you will find that never before has the rate of change been this large. . . Okay, I did a bit of research. It seems that just after the end of the last major ice age, 12,000 years ago (before modern civilzation), the global temperature jumped by about 14 degrees (F) in just a few decades. This article: http://www.spacedaily.com/news/climate-04k.html Cites several other examples of rapid climate change. Two particularly interesting paragraphs: ""Technically, an abrupt climate change occurs when the climate system is forced to cross some threshold, triggering a transition to a new state at a rate determined by the climate system itself and faSter than the cause," according to a definition developed by the National Research Council. Abrupt change needs a trigger, an amplifier -- some mechanism to have the trigger affect a large area -- and a source of persistence. It turns out lots of triggers have been identified, for example, an accumulation of carbon dioxide in the atmosphere, as is occurring now."" Yep. One trigger I've seen brought forth regarding the end of dinosaurs is CO2 related. Seems not only did some major comet or meteoroid strike, but was also the ignition agent of the many trees that lay dead. Kinda like burning alot of coal or oil derivative. Dave- Hide quoted text - - Show quoted text - Also preceeding the dinosaur period. The earth had gone thru a huge global warming period from excess CO2, probably from eruptions as the tectonic plates moved. Probably no polar caps on earth. The CO2 then broke down and the earth had a rich abundance of oxygen which fed the The CO2 then broke down?? How did that happen? muscles of the dinosaurs and resulted in their huge size. Thus the earth will always heal itself although life changes occur. Why does man think he will be here forever when history proves otherwise? Red |
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