I didn't say it had no variability. I said it has had no variability at the rates we've created over the last century with our GHG emissions.
You have no basis to make that statement. HIGH RESOLUTION LOCAL proxy studies show 2 to 5degC variation in the historical record ---- most all the time.. But they STILL dont have the time resolution to compare to our past 60 year experience..
Go ahead and claim that -- but there's no thermometer records to confirm it..
You're not getting the basic limitations of these GLOBAL proxy studies that Marcott confirmed. That they only good for looking at centennial and millenial trends.. And you are confused by seeing only the GLOBAL results and not the INDIVIDUAL higher resolution proxies..