Once again we are drifting off topic, I contend that AGW the man caused part of GW is very small.
And your contention is offset by countless "
attribution studies" which say you are likely incorrect.
Your contention is not based on the science. Your contention is not based on data.
What on Earth though does one do with the MWP & LIA they were global according to this very comprehensive website. With many geological constructs.
CO2science is not a peer reviewed science source. The evidence for them being global is still not established.
If the MWP & LIA are allowed to be part of the geological record and the MWP was global then this modern warm period is not unusual in the least.
HOld it, hold it, hold it right there. IF the MWP was global (a big if and right now not in evidence), but IF it was it wouldn't change one whit what humanity has done since the mid 19th century.
We have SINGLE HANDEDLY pumped SO MUCH FOSSIL FUEL CARBON into the atmosphere since the 1850's
that it has shifted the stable isotopic composition of the atmospheric CO2 away from it's previous 10,000 year relatively stable level.
Last I checked, CO2 is STILL a known greenhouse gas. So we IF AGW is a "false hypothesis" we will have to re-imagine almost all of physics and chemistry to account for how this massive blot of CO2 we've pumped into the atmosphere CAN'T cause warming.
In the MWP warming will be understood by OTHER mechanisms...mechanisms that have NOTHING to do with our current state of knowledge of the system as it is.
And we know a LOT about the system today.
It's like walking into a room and seeing a bright glow in the corner. You walk around the room and measure things and come to the conclusion that the curtains are on fire. Now this doesn't change the fact that many years in the past there could have been a LIGHT in the corner that was plugged in and glowed. But today we can measure the heat and flames and see the fire.
But if I followed you in the room and said "Light in this room is nothing new! One day Joe put a lamp in that corner and turned it on! I bet this is EXACTLY like that!"
In fact there have been many warm and many cooling periods that were global. Why do we worry so much about this one and mankinds small contrabution to it ?
You seem to be largely alone in your estimation of our "small" contribution.
How small do you think it must be in order to SHIFT THE STABLE ISOTOPIC COMPOSITION of the atmospheric C?
(Please let me know if you don't know what "stable isotope geochemistry" is, I will be glad to give you a nickel tour of the concept. I'm hopeful you at least know what an "isotope" is.)