The reason has to do with the fact that the warmings take about 5000 years to be complete. The lag is only 800 years. All that the lag shows is that CO2 did not cause the first 800 years of warming, out of the 5000 year trend. The other 4200 years of warming could in fact have been caused by CO2, as far as we can tell from this ice core data. http://www.realclimate.org/index.php/archives/2004/12/co2-in-ice-cores/ That is a pro global warming site. Until we see further evidence, neither you, scientists, Gore, nor and I have any proof that man is causing global warming.
So CO2 molecules don't absorb heat because 5000 years ago something something something? You know, I've posted an actual graph of the heat absorption of each molecule. Many molecules = more heat absorption.
If you brought it all together, the World's carbon dioxide would fill a cube 116.92 km high. In 2007 there was 2,989 billion tonnes of carbon dioxide in the atmosphere. If you know what a Mole is or Avagadro's number you can calculate it out.
Here you go -- updated each month, this website details the amount of CO2 in the atmosphere: http://co2now.org/
LOL.. if i had any motive, i'd drum up some quotes from your fellow climatologists. As I don't, (have any motive that is, other then to stop your insane idiocy), I d find it more rewarding to argue with a 4 year old.... children are so honest OK, to be a good sport, I'll refer you back to the OP's original post........ Have you Drowned Yet! what douche-bags you people are