Vostok, Antarctica Ice Core Data
In Al Gore’s presentation of his "Inconvenient Truth" documentary, he conveniently separated the Vostok Ice core temperature and CO2 graphs so you could not see which came first, a warming spike or a CO2 spike. He said that a CO2 spike came first but alas, it was the just the opposite as shown in the Vostok Ice Core graph above.
When both lines are combined on one graph, suitably enlarged and viewed in the correct direction from left to right, it is clearly seen that a warming spike always comes first (blue line) followed by a CO2 increase (red line) some 800 years later.
Source Link: iceagenow.com