Climategate: Three of the Four Temperature Datasets Now Irrevocably Tainted
Dear Whitey:
Your statement:
“as far as we know from geological records it (C02) is at higher concentrations then it has ever been in our atmosphere, and it is increasing at an accelerating rate. Even if there is no effect on the global mean temperature from it yet”
Is factaully incorrect. C02 was 470% higher in the Jurassic Period and 1800% in the Cambrian Period-further most C02 reconstructions show that the current level (383 ppm) is among the lowest levels for C02 in Earth’s History…not our (human) history, Earth’s History->please see attached graph.
“There has historically been much more CO2 in our atmosphere than exists today. For example, during the Jurassic Period (200 mya), average CO2 concentrations were about 1800 ppm or about 4.7 times higher than today. The highest concentrations of CO2 during all of the Paleozoic Era occurred during the Cambrian Period, nearly 7000 ppm — about 18 times higher than today.
The Carboniferous Period and the Ordovician Period were the only geological periods during the Paleozoic Era when global temperatures were as low as they are today. To the consternation of global warming proponents, the Late Ordovician Period was also an Ice Age while at the same time CO2 concentrations then were nearly 12 times higher than today– 4400 ppm. According to greenhouse theory, Earth should have been exceedingly hot. Instead, global temperatures were no warmer than today. Clearly, other factors besides atmospheric carbon influence earth temperatures and global warming.”
Climate during the Carboniferous Period
http://www.uspoliticsonline.com/environmental-issues/55210-co2-once-1000x-higher-than-today-during-ice-age-5.html
