The fly in the buttermilk is, all available historical data (for example, from the Voshtok Ice Core) show that change in temperature preceeds change in carbon dioxide concentration, and therefore cannot be caused by change in carbon dioxide concentration. All (every single one) peer-reviewed papers that I've seen on the subject state that the change in carbon dioxide concentration lags temperature change, by 100 to 300 years.
PS. It's thirty-five degrees colder than normal here in the People's Republic.
The fly in the buttermilk is, all available historical data (for example, from the Voshtok Ice Core) show that change in temperature preceeds change in carbon dioxide concentration, and therefore cannot be caused by change in carbon dioxide concentration. All (every single one) peer-reviewed papers that I've seen on the subject state that the change in carbon dioxide concentration lags temperature change, by 100 to 300 years.Generally true for glacial-interglacial transitions, which is driven by Milankovitch forcing, primarily. We're currently adding CO2 to the atmosphere at a rapid rate during a very stable interglacial. That's why the PETM situation is an interesting case for comparison.