Less and yet warmer

The radiation emitted by the sun has been declining ever since we measured, there have been occasional spikes however the overall radiation has decreased.
The Radiation emitting from the sun is the energy source for earth the more is emitted the warmer it would get on earth however earth currently defies that logic by increasing the surface temperature while the radiation is decreasing.

Now usually planets do not develop their own habits or do what they want in general there situations that create what we now experience for example unbearably warm summer.
The increase of surface temperature in this case is likely to be linked to certain other factors specifically to earth. This would imply certain conditions on earth cause this rise, the main probable cause at this point of course is the usual suspect is Global Warming. AKA: The beautiful holes in the Ozone layer which are created by...the life-forms and certain technologies on this planet.

The sun was so far the main other suspect for the rise in temperature on the earth surface. Now that that has been ruled out the scientists have to find a new reason, of course for some economical reasons it would be nicer to blame the sun since a great number of industries are causing the increase of the damaging gases which are creating the hole. So the search ones more commences.

Related Articles:
'No Sun link' to climate change (BBC)