http://ff.org/centers/csspp/library/co2weekly/2005-08-18/dioxide.htm
Over the last 200 years, humans have engaged in an unprecedented experiment with the climate. We have increased CO2 by over 100 ppm. You can see this dramatic change marked in red on the right side of the graph above. Our unprecedented and dangerous experiment has brought CO2 up slightly above the lowest levels in earth’s history.
One can hardly imagine the intense heat and extreme weather during the Ordovician Ice Age, with CO2 levels 10 times higher than at present.
A Late Ordovician ice sheet in South America: Evidence from the Cancañiri tillites, southern Bolivia
Detailed mapping and facies analysis of a thick succession of diamictites of the Upper Ordovician Cancañiri Formation in southern Bolivia has revealed a glacioterrestrial origin for these sediments. The Cancañiri diamictites were deposited during three advances of a temperate, grounded ice sheet.
Excellent!
I suggest folks bookmark this page and send those people here that frighten easily and fall for this 100 ppm drastic increase nonsense.
Usually the alarm-o-warmists will fret about the rapidity that the100 ppm has been added. They never quite explain why this is something to worry about, but it gets them all “hot & bothered.”
I dunno.. the Devonian, Permian and Jurassic rises were pretty dramatic. Those danged T-Rex’s driving their SUV’s around were the last ones to cause all the trouble. Oh wait, the temps plummeted 5 degrees that time. Not to mention rose again when CO2 fell..
I guess unprecedented has been redefined to mean “as long as homo sapiens have been around”
I don’t know why people have a hard time with this….
You can see where forests evolved in the late Devonian…and drove CO2 levels down.
After that, it’s clear to see that CO2 is a product of temperature.
If anyone still doesn’t see it, you can see where grasses evolved in the late Cretaceous…drove CO2 levels down again
…and put us where we are right now….with CO2 being limiting
Although I thoroughly disagree with your agenda (if you knew me you’d probably call me a hippie, libtard, commie, etc), it is clear that IF that graph is accurate, the current global warming scenario would be without foundation. Its proponents need to give an explanation, or admit that they are wrong.
Are you aware of the fact that i live in a small apartment in Maryland where I have never turned the heat or AC on, and I travel exclusively by bicycle or bus?
I have no idea what you think my “agenda” is.