text: On its own, the CO 2 increase since 2005 should have caused a radiative forcing of 0.24 Watts per square meter, or 0.34 W m 2 after including the influence of all other greenhouse gases. Even without temperature feedbacks, according to the IPCCs methods this forcing should have caused 0.1 C warming. Adding in the IPCCs temperature estimates of temperature feedbacks and of previously-committed global warming should have caused up to 0.3 C warming since January 2005. None has occurred.