DuckSince89 also requested links on CO2 lagging temperature. Here is one that gives a good explanation and many links to some of the studies.

http://www.co2science.org/articles/V6/N26/EDIT.php

Here is another analysis based on chemical engineering mass transfer theory which confirms the 800 +/- 200 year lag observed in the studies:

http://principia-scientific.org/atmospheric-carbon-dioxide-lags-temperature-the-proof/

There are plenty more, feel free to look.