So, at least in general, AGW skepticism doesn't have anything to do with greenhouse gas theory, but with feedback. (climate-skeptic.com)
If the pictures are very similar despite the different forcings that implies that the pattern really has nothing to do with greenhouse gas changes, but is a more fundamental response to warming (however caused). (realclimate.org)
Others have argued that the records were caused by El Nino, a complex natural phenomenon that takes place every few years, and has nothing to do with greenhouse gas emissions by humans. (climatism.blog)