Climate during the Carboniferous Period
Earth experienced an ice age 450 million years ago, with CO2 somewhere between 2000 and 8000 ppm. According to Hansen’s theories – all life on Earth should have been extinct before it even evolved.
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Wikipedia does not have a page for the Ordovician ice age. Wikipeadia claims the Ordovician Ige age was only 0.5-1.5 million years long. The thickness of the blue temperature line is about 4 million years. Clearly they’re in deep denial.
do you mean 2000-8000 PPM?
For obvious reasons, the Warmists never talk about the cold of the Late Ordovician Period, when the planet’s average temperature was far lower than today’s 15 degrees centigrade, yet CO2 concentrations were nearly 12 times higher, at 4,400 ppm. According to the conventional greenhouse gas theory, our planet should have overheated. There are clearly other influences (the sun comes to mind) besides CO2 that impact the earth’s global temperature.
But if you’re a scientist trolling for research dollars to study (“confirm” is a better word) human-caused “climate change,” such facts are inconvenient. And those skeptics who cite such data our attacked and ridiculed for challenging the “scientific consensus,” which, of course, is non-existent.
There is a treasure trove of excellent research at this site that exposes the CO2 warming myth.
http://www.geocraft.com/WVFossils/Carboniferous_climate.html
Good stuff. I read this a couple of years ago as part of my climate education process.
And I learned about it from you, and have been using it ever since.
Sorry, I meant I learned about that site here.
According to peer review from 97% of leading climate experts, the earth should have heated up above the boiling point and all life should have been exterminated. The fact that it did the opposite would appear to undermine their already highly dubious credibility.
Finnaly we know the truth… CO2 causes cooling and to stop future out-of-control global cooling we must control CO2 output. Our food supply depends on it! CO2 continues to increase with no associated increase in warming. The science is so complex that warming can cause cooling or what is called “wooling”, which is bad. All funding must be diverted to study AGC. If CO2 doesn’t cause warming then it must cause something, Right?
It was “Celestial driver of Phanerozoic climate?” by Shaviv & Veizer (2003) that helped kick me from Lukewarmer to skeptic to scoffer in 2007 when I first read it, thanks to Svensmark’s Cosmoclimatology paper which referenced it and other very interesting lines of investigation. And that path has been steadily been solidified with both theory and experiment thanks to the likes of Svensmark, Friis-Christensen, Shaviv, Veizer, Lindzen, and not the least Kirkby. And a host of others.
From Shaviv’s website:
http://www.sciencebits.com/ice-ages
Figure 5 is from SV03, which can be found here:
http://www.phys.huji.ac.il/~shaviv/Ice-ages/GSAToday.pdf
Figure 1 from SV03 shows the poor correlation between CO2 and ocean temps over the past ~500 million years.
Palaeontologists are also in denial about the atmosphere as according to everything we think we know the dinosaurs could not have existed in the thin atmosphere we have at present let alone some have flown. Its only when we join up the thinking as good engineers have been trained to do that we can make use of the information scientists provide us with. They on the other hand are on the whole poor at thinking things through if it involves knowledge outside their field of expertise which these days can be very narrow
http://pubs.acs.org/subscribe/archive/ci/30/i12/html/12learn.html
http://www.dinosaurtheory.com/index.html
That’s pretty neat.