Dependence of global temperatures on atmospheric CO(2) and solar irradiance

Changes in global average temperatures and of the seasonal cycle are strongly coupled to the concentration of atmospheric CO(2). I estimate transfer functions from changes in atmospheric CO(2) and from changes in solar irradiance to hemispheric temperatures that have been corrected for the effects of precession. They show that changes from CO(2) over the last century are about three times larger than those from changes in solar irradiance. The increase in global average temperature during the last century is at least 20 times the SD of the residual temperature series left when the effects of CO(2) and changes in solar irradiance are subtracted.