Stanford University for one among many references:
http://solar-center.stanford.edu/sun-on-earth/glob-warm.htmlTo quote:
"Some uncertainty remains about the role of natural variations in causing climate change. Solar variability certainly plays a minor role, but it looks like only a quarter of the recent variations can be attributed to the Sun. At most. During the initial discovery period of global warming, the magnitude of the influence of increased activity on the Sun was not well determined."
NASA:
http://earthobservatory.nasa.gov/Library/SORCE/sorce_03.html"Solar Variability
If that were all there was to the Earth?s radiative balance, scientists studying the Sun would have probably long since moved on to another climate-related problem."
Quite simply ... even if the sun were getting brighter ... you can not reverse the laws of chemistry and physics. The extra CO2 is definitely there. No one disputes that as fact. Similarly no one disputes that CO2 does what CO2 does. You can not claim CO2 causes the greenhouse effect ... except when the sun gets brighter ... or for some other connivance.
I am continually amazed by the by the number of people willing to stretch reality in the hope that denial is the name of a river.
