One piece of factual evidence I can provide without any effort at all, to at least prove how baseless the IPCCs un-scientific statement that - "Most of the observed increase in global average temperatures since the mid-20th century is very likely [90 percent confidence] due to the observed increase in anthropogenic greenhouse gas concentrations" is@Scrubber_steve It seemed fairly obvious to me, but my apologies for being unclear. You stated earlier that it's not possible to attribute any of the recent warming to anything but natural variability. What I'm asking for is a single (or ideally a few) peer-reviewed paper(s) published, say, in the 21st century that specifically reach that conclusion. My B.S. detector starts beeping when I ask someone to simply copy and paste the URL of a single peer-reviewed source and I get 1000+ word response filled with graphs and complex explanations and no citations that aren't personal blogs.
how on Earth could they ever come to that conclusion when they don't know if an increase in radiative forcing of 3.7 W/m2 from doubling CO2, will result in 1.5C of warming or 4.5C of warming?
LOL