Cool, I appreciate describing someone who is unsure about man causing global warming. I didn't notice anything in there that he says "global warming isn't happening" and i also noticed a quote that he said man probably had an impact on the atmosphere. I said a peer reviewed article saying global warming isn't happening, while the original post does suggest global warming might be based on inaccurate models.
So, yes atmospheric scientists generally agree that CO2 is not the only thing affecting the atmosphere. But rather there is more causing the changes. To assume that CO2 is the only green house gas is silly. And yes, Nature geoscience is a peer reviewed source. Yet no, GLOBAL WARMING IS A LIE! just carbon dioxide is not the only cause and there maybe more causing it we don't understand.
The lie is that oceans will rise in 50-100 years to drown all the coastal cities. Actually, most of Al Gore's movie.
I agree there may be more causing it that we don't understand. We don't understand why there's global warming on all the inner planets at the same time - not just Earth.
I actually agree with Hasoos that pollution isn't a good thing and we should always be improving things to that end. It's a far different thing than "if we don't stop now, we'll hit the tipping point tomorrow and it may already be too late!" I drive a Prius, FWIW.
When I was at UofI, I worked for the USGS doing software modeling. You'll have to excuse my skepticism about the accuracy of the computer models used to scare people when they don't even predict the past with known data and result sets. Or that they're not even close to modeling .0000001% of a comprehensive climate model.
My own theory about global warming is albedo. White surfaces reflect heat, dark surfaces absorb it. Trivial to prove - take a white and a black piece of cardboard and let them sit in the sun and you can measure the air over the black one is hotter with a thermometer. 10,000 years ago, the earth was considerably whiter. Ice age, ice caps down past the great lakes (oh my goodness, look how far the ice caps have really melted!). The less ice, the darker the surface, the more heat not reflected into space, the hotter it gets. It is a feedback mechanism, too - it should get warmer faster as time progresses.
Just paving roads with asphalt darkens the earth's albedo, and asphalt is like 95% efficient at absorbing heat. Why they don't make solar panels out of it is beyond me ;-)
Then there's that troublesome ozone whole right over where the ice caps are melting. That's man made, but not something we continue to do (put CFCs in the air).
Or clear cutting of great areas of the amazon rain forest (you can really see it from satellite photos). HUUUUGE areas of vegetation cut down. What do trees and vegetation do to CO2? Photosynthesis (CO2 + H2O in, sugar plus O2 out).
