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The attribution of part of global warming to changes in the total solarirradiance (TSI) is an important topic which is not, yet, fully understood.Here, we examine the TSI induced temperature (T) changes on a variety of timescales, from one day to centuries and beyond, using a variety of assumptions.Also considered is the latitude variation of the T-TSI correlations, where itappears that over most of the globe there is a small increase in thesensitivity of temperature to TSI in time. It is found that the mean globalsensitivity (alpha)measured in K(Wm-2)-1 varies from about 0.003 for 1 day, via0.05 for 11-years to about 0.2 for decades to centuries. We conclude that meanglobal temperature changes related to TSI are not significant from 1975onwards.  Before 1975, when anthropogenic gases were less important, many of thetemperature changes can be attributed to TSI variations. Over much longerperiods of time, from Kyear to Myear, the TSI changes are more efficient still,the sensitivity alpha increasing ro about 0.5. Since 1975 the changes in meanglobal temperature are not due to TSI changes, but rather to the increasingatmospheric CO2 content.

Response of atmospheric ground level temperatures to changes in the total solar irradiance