Can we just go back to real papers, real greenhouse concentrations and the papers that support the conclusions. (realclimate.org)
I believe human activities have contributed to increases in greenhouse concentrations, and these increases can be expected to produce a gradual increase in global mean temperatures. (skepticalscience.com)
«The claim that climate models systematically overestimate the response to radiative forcing from increasing greenhouse concentrations therefore seems to be unfounded.» (carbonbrief.org)