I found that the general belief is that the average surface temperature
over the
whole earth for a
whole year has
increased from ~ 288 K to 288.8 K in roughly 150 years, i.e. 0.3 % and that it is due to
increased CO2.
AGW means that the heat content of the
whole Earth system
increases, but it does not make unique predictions on the relative rates of warming of various parts of the
Earth system
over periods up to a couple of decades.