Roy Spencer is a right wing Alabama hillbilly AGW denier.
It is funny that these debates always end up being with completely ignorant people (gladiator), or debunking the one or two fringies who are always popping up with misleading articles. Lu and Spencer are those fringies, and their angles are pretty solidly debunked.
Why focus on these clowns and not on the thousands of far more credible scientists who make up the consensus? You've just got to face the facts that man made climate change is scientific fact, proven a thousand times over. Its completely settled and a solid fact.
Roy Spencer’s Latest Silver Bullet | Climate Asylum
Denier or not, I think Roy Spencer did demonstrate that the current climate models SEEM to overestimate the effect of CO2 in warming the atmosphere.
Of course, he also confirmed that there is an upward trend in Global Temperature and we are headed in a bad direction even if it is at a slower rate than some estimate.